
Stats

Twitter Widget
This is a widget that will show a list of the latest Tweets from any Twitter account. The configuration is easy; simply drag the widget to any widgetized area in your theme, pop in your Twitter username (or someone else’s), configure a couple of other options if you want, and boom, there you go! Instant Tweets!
Gravatar Hovercards

WP.me shortlinks
If you click on the Get Shortlink button when you are on the post edit page in your wp-admin, normally it would give you something like http://mydomain.com/?p=34. This often isnt that much shorter than the original permalink, so it isnt that useful for posting a link to Twitter, for example. With Jetpack, you will instead get a WP.me link, such as http://WP.me/j7gv9, which is obviously much shorter. Of course, you could also use bit.ly or even roll your own link shortener solution, but this one is effortlessly integrated into the post editor screen.
Sharedaddy

LaTeX
This is something that likely wont be used by many, but will be highly appreciated by those who need it. LaTeX is a markup language for writing mathematical equations, formulas, etc., and this part of the Jetpack lets you easily include them in your posts.
After the Deadline

Shortcode Embeds
Shortcodes are small macro codes enclosed in square brackets that allow you to access some special functionality from within a page or a post. Jetpack comes with several media-related shortcodes that make it easy to embed a video from YouTube or a presentation from Slideshare into your post. Each one has its own parameters that may or may not be required, so youre better off reading the instructions for each one.
The shortcodes are:
archives, audio, blip.tv, dailymotion, digg, flickr, googlevideo, scribd, slide, slideshare, soundcloud, vimeo, youtube, and polldaddy.
Future?
The Jetpack site as well as the plugins options page in the wp-admin include teaser boxes that hint at upcoming additions to the package. I wont speculate on what they might be, but please go ahead and do so in the comments below!
Soar or fall?
For the power-user or site developer, Jetpack is probably not the ideal solution. Each front-end feature adds extra weight to your site (in javascript and extra http requests), and there may be other plugins or even custom code that can do the same things but with more options or leaner code. For the casual blogger however, it adds some (mostly) useful features and even exposes some that they may not have even been aware of (Hovercards, anyone?). I probably won’t use it on my own sites, but I’m looking forward to seeing what other functions will be included in the future.


