Ubiquity adds easy to use commands to Firefox. It's dead simple to use: activate it with a keyboard shortcut (I use Ctrl-Space), then type in a command. The commands autocomplete, so you don't even have to remember or type in the whole command. Some good ones:
weather <location> gives you the local weathertinyurl <URL> sends the URL to tinyurl and enters in the shortened URL at the current cursor location. (Great for Twitter!)twitter <message> broadcasts a message on twittertag <list of comma-separated tags> saves the current tab as a bookmark and assigns it the list of tagsemail <text> to <email address> starts a new email in Gmail with a link to the current web pageescape HTML entities replaces all instances of greater than signs with > and all less than signs with < in the selected text--very useful for HTML-enabled forms where you want to discuss HTML tagstranslate <text> <from language> <to language> replaces the selected text in a website with a translation of that text into a new language.add to google calendar <event> adds an event to google calendar, e.g. "add to google calendar dinner with parents Friday at 5pm"list opens a list of all the commands Ubiquity accepts
Very spiffy.
So, I've been gone for a while. I've been spending most of my time learning how to program in Objective-C and writing a new iPhone app. And now, it's finally ready and available for download!
The FoodPad Calorie Tracker is designed to make it as easy as possible to keep track of what you eat. It remembers previously entered foods in an autocomplete list for later meals, and it helps you discover how many calories are in your favorite homemade foods with the Recipe Calculator.

You can download FoodPad from the iTunes App Store now or find out more about it.
Facebook has been deteriorating lately; the signal-to-noise ratio is going down. The news feed is cluttered with quizzes like "Which Disney princess are you?" and with people becoming "fans" of things like music and water.
Fortunately, there are people out there who have fixed these problems for us, with an incredibly useful little Firefox add-on called Greasemonkey. If you don't have it already, just click that link and click "Add to Firefox."
Next, we're going to install a script to make Facebook look like this:

After you've added Greasemonkey to Firefox, click on this link to install a script that will strip out Facebook ads, make it have only two columns instead of three, block app invites, and remove "fan" pages and apps from the Highlights and news feeds.
You'll be left with just the signal without all the noise.