Mozilla created Firefox 4 with an extremely useful feature – App Tabs. The purpose of App Tabs is to place any website in permanent tab from at the top of your Firefox window

Read the original:
Firefox 4 Tips: Using App Tabs

For those who love using tabs, but tend to fill up the tab strip, Tab Groups are the perfect solution. With Tab Groups, you can sort your tabs in sets. This works well if you want to organize tabs by task or function.

Read more:
Firefox 4 Tips: Using Tab Groups

Many people pride themselves on the number of Facebook friends they collect, so when that number decreases without any warning, they obviously want to know why.

Original post:
Find Out when Facebook Friends Delete You

Recently, after undergoing changes just a few months ago, Yahoo began sending notices to all of its email users telling them that they are going to stop supporting all current versions of the existing Yahoo mail interface and that those subscribers that wish to continue to use their account must upgrade to the new version. Fortunately, the updated version is much better than anything Yahoo has offered before, it’s faster, by far, looks better, is better organized, gives you more data space and is easier to use once you learn where everything is and how to use it.

Link:
How to Use the New Features in Yahoo Mail (Beta)

Many people who have been using Windows 7 for awhile might be surprised to learn that there is a not very well known secret right-click feature that can be used for all sorts of purposes. To see how the “secret” trick works, bring up any file manager, for this example, we’ll use Windows Explorer .

Read more here:
Take Advantage of Window 7′s “Secret” Right-Click Feature