It’s a really great app and I thought I’d have a play, but half-way through the install I realised that setting up an H2 DB server was a step too far, so instead I rewrote it to be a pure Ruby app using the SQLite3 database. Using SQLite3 keeps it a self-contained app in a single directory without the need to run a database server.
Gwibber is a native desktop Twitter client for Ubuntu. It will post updates to and receive updates from Twitter as well as a host of other services like Flickr, Facebook, Digg, can update your Pidgin status and pull in any other RSS or Atom feed you like.
It will sit in your notification area waiting until you get some messages which it will display as pop-ups in the corner of your screen, and won’t steal focus whilst it does so (take that, twitterfox!).
It is unobtrusive, attractive and easy to use. Theme templates are just HTML and CSS. I recommend giving it a go.
In Jaunty Jackalope it is in the Universe repositories (so sudo apt-get install gwibber will work) but for everyone else you can either follow the instructions on this page (which means you will get future updates) or go direct to the Gwibber PPA page, expand the section with your distro listed and grab the .deb file.
Deskbar is a Gnome widget you can embed in a panel and can be used for opening applications, opening items from your browser history, doing web searches and all sorts. It’s not as good as Quicksilver but better than Launchy. It fires when you hit a key combo (mine is CTRL+SPACE) and looks a bit like this:
For the soulless, Twitter is length limited asynchronous multicast IM, for everyone else, it’s a nice way to keep up to date with what your friends are doing using the web, IM or SMS. My rarely-posted to Twitter page is here.