Via CSS-Tricks. Flexigrid is a lightweight but rich data grid with re-sizable columns and a scrolling data to match the headers, plus an ability to connect to an XML-based data source using Ajax to load the content. I’ve used the jQuery tablesorter plugin in the past but Flexigrid goes a little further with the Ajax functionality.

Via Mashable. Ping.fm is a status update tool that sends your updates to a handful of your favourite microblogging services. So far, Ping.fm supports Twitter, Facebook, Jaiku, Tumblr and Pownce. The concept is one that will catch on like wildfire in the coming months, and the options for submitting an update come in the form of email, IM, its Google gadget, and a desktop application. It’s in beta (goes without saying) so it’s a case of sitting tight or getting lucky with an invite at the moment.

Klaus Komenda as a good write up about using the Dust-Me Selectors Plugin. This is a Firefox plugin that scours your CSS files to find unused selectors so that you can shave some more bytes off the file size (as well as help maintainability). Version 2.0 of the plugin, written by SitePoint, now has a spider to do the crawling for you so combined with a sitemap.xml file this should be relatively tedium-free.

Noupe.com has released the first of a four-part series of posts highlighting useful hacks, tips and techniques for getting the most out of WordPress.