Showing posts with label Networking. Show all posts
Showing posts with label Networking. Show all posts

Monday, December 19, 2011

Facebook Friends and Frenemies Report - Why We Add and Remove

There's a new Facebook research report from Nielsen McKinsey's NM Incite titled Friends & Frenemies: Why We Add and Remove Facebook Friends that's pretty interesting. The report looks at the factors that help Facebook users decide whether they want to add someone as a friend or remove an existing person the their friend list. Here's a few details:

  • Knowing someone in real life is the top reason cited for friend-ing someone (82%)
  • Offensive comments are the main reason someone gets the boot (55%)
Additional report details suggests that real world interactions drive online friendships. Meanwhile, sales-oriented and depressing comments help drive friend removals. Facebook etiquette also plays a role, with updating too often, too little or having too many friends a consideration for some Facebook users.

Regarding gender, the report research indicates that men are more likely to use social media for careers/networking and dating – while women use social media for a creative outlet, to get coupons/promos or to give positive feedback. More men add friends based on business networks or physical attractiveness and women are more likely to friend based on knowing someone in real life or remove them due to offensive comments.

Here's an interesting infographic from the report.


Wednesday, October 6, 2010

The 10 Best IT Certifications Podcast

Over the weekend, Mike Q and I recorded a podcast discussing Erik Eckel's 10 Best IT Certifications for 2010 post along with Mike's recent blog posts on IT certifications. You can listen to the 35 minute podcast in your browser by clicking the play button below:


If you have iTunes installed you can subscribe to our podcasts by clicking here.

Tuesday, May 18, 2010

A Good Cloud Computing Video

I was at an excellent Tech Futures Forum event today sponsored by BATEC and CAITE at the Microsoft New England Research & Development (NERD) Center in Cambridge, MA. Edwin Guarin, Senior Microsoft Academic Evangelist gave a nice presentation on cloud computing and Windows Azure. As part of the presentation, he showed the following video:



There is a lot of confusion about what cloud computing is - this video gives a good basic and easy to understand explanation. It's only 4 minutes and 52 seconds long and worh the time to watch!

Friday, December 4, 2009

What's DNS And Why is Google Doing It?

Yesterday, Google announced a public Domain Name Service (DNS) resolver called Google Public DNS. What's DNS? You may not be familar it but it is something you use every time you use the Internet. I like to describe DNS as a telephone book look-up service (sort of like directory service) provided typically by your Internet Service Provider (ISP). Here's an example of how it works.

At home, my ISP is Comcast and I pay them every month for Internet access. I get a broadband connection (cable modem), an Internet Protocol (IP) address (think of an IP address like a telephone number - it uniquely identifies you on the web and allows you to send and receive information), a gateway connection to the World Wide Web and access to Comcast DNS servers. All pieces are important in my every day use of the web:

  • If I don't have a physical connection I can't access the web.
  • If I don't have an IP address I can't access the web.
  • If I don't have a connection (or gateway) into the World Wide Web I can't access any content outside of my own home network.
  • If I don't have DNS I can't use names or URLs to access web content.
Let's take a closer look at how DNS works. Let's say I launch my web browser and in the address bar type the URL (or name) of our Center website www.ictcenter.org. How does the site end up appearing on my screen? Our www.ictcenter.org URL is registered which means we've paid a sponsoring registrar (in our case it is godaddy.com) to create a domain name registration record. Included in the record is our URL (www.ictcenter.org) and the IP address of the server our website is loaded at. This URL and IP address information gets distributed across the World Wide Web to DNS servers. Now, when I'm home on my Comcast connection and I type www.ictcenter.org in my browser address bar, here's what happens:

A query is made from my computer to the Comcast DNS server my connection is assigned to. The DNS server looks up the IP address of the server hosting www.ictcenter.org and that IP address is returned to my browser. My browser is directed to the IP address and it accesses the server, pulling down the site content. On an average day a user will access DNS servers hundreds of times, all transparently. It's a service that makes the web a lot more convenient - users only need to remember domain names and not much harder to remember IP addresses.

So, what is Google doing? Basically they are offering a competing DNS service. Users can access Google servers for DNS information and bypass ISP DNS servers if they want. It's free from Google and there are instructions on how to make the DNS server swap on the Google Code Blog.

So, why is Google launching this service? According to their announcement page it's to make make users' web-surfing experiences faster, safer and more reliable. Now, in the past ISPs have had some major DNS server meltdown problems. In defense of the ISPs things have gotten a lot better over the past few years.

Sounds great another option and maybe even a backup. Now - is bypassing ISP DNS servers something new? Not really - there are other competing DNS options similar to what Google is doing - on of the more popular ones is OpenDNS.

What's the deal here - If I'm an ISP and Google (or someone else) wants to handle DNS for my customers it sounds pretty good. I don't have to worry about maintaining DNS server hardware and keeping them updated - Google can do it for me.

But - is it really a pretty good deal for the ISPs? No - not really.

Why? Have you ever typed in an incorrect or non-existent URL? A year or so ago you would likely get some kind of server not found message in your browser. Today, depending on your ISP, you may get something called DNS redirection advertising and end up seeing a bunch of linked ads. These ads provide a new revenue stream to the ISPs so most of them are doing it. As an example, try clicking this non-existent URL www.vojrrtjbfb.com Most ISPs and OpenDNS will end up taking you to a page of linked ads.

Now to be fair to the ISPs - with Comcast it's real easy to opt-out of redirection advertising by logging in to your customer portal and clicking a single option to immediately turn it off. Most ISPs do provide a similar opt-out option.

Will Google (fundamentally an ad company) eventually turn bad typing skills into revenue with their Publc DNS service? Maybe and maybe not. It will be interesting to watch.

Wednesday, October 14, 2009

Wi-Fi Direct

Tomorrow the Wi-Fi Alliance consortium (Cisco, Apple, Intel and over 300 other equipment manufacturers), will release something called Wi-Fi Direct - a technology that will turn (according to Business Week) turns gadgets into mini access points, able to create wireless connections with other Wi-Fi-enabled gadgets or broadband modems within a radius of about 300 feet.

Wi-Fi Direct enabled devices can be setup to automatically scan the vicinity for existing hot-spots and the gamut of Wi-Fi equipped devices, including phones, computers, TVs, and gaming consoles. They will then be able to connect to these devices in a peer-to-peer configuration. Two connected devices will not have to be both running Wi-Fi Direct, only one of two paired devices will have to be enabled to establish a connection. Here's more from Business Week:

The feature could boost usage of Wi-Fi capabilities in smartphones and television sets in particular. "It makes adding Wi-Fi to devices that don't have Wi-Fi more compelling," says Kelly Davis-Felner, marketing director at Wi-Fi Alliance. Marvell is already talking to makers of TVs, few of whom offer Wi-Fi connectivity today but are now considering adding the capability to let users wirelessly transfer photos and video from their Wi-Fi-enabled cameras, camcorders, and netbooks directly onto TV screens.

You'll be able to upgrade many of your existing Wi-Fi enabled devices. Expect to see enabled products like cameras, TV's, printers and just about every smart-phone become available next year and get ready for some pretty cool television commercials demonstrating the technology!