Vlad Bailescu’s WordPress Stats Helper plugin is useful for showing a list of top blog posts in one’s sidebar, but it can have the tendency to artificially elevate posts in a feedback cycle of awesomeness.
What you want is to rotate the posts around to give other popular posts some exposure. I’ve made some minor adjustments to Vlad’s plugin to add the option for random rotation.
Grab the modified version here: wordpresscom-stats-helper-random.zip
You’ll want to unzip this in your wp-plugins folder, disable the old plugin, then activate this one. See the new settings in the widgets section of your WordPress admin — I recommend a random pool size that’s twice the number of posts to display, but you can tweak the settings to your liking.
I’ve just finished a new release of my Flickr plugin for WordPress, 
Keep your traffic in the family! Host Twitter images on your own site, with support for comments and trackbacks, image
resizing and thumbnailing with Lightbox.
Personalising AddThis’s Tweet Button
AddThis is a quite useful WordPress plugin for adding a host of sharing options to your blog posts.
By default, the “Tweet” button that AddThis provides will append “via @AddThis” to the end of tweets, which seems to me a little uncool, given that it’s your content.
So, here’s a little plugin that lets you specify your own Twitter account name instead of @AddThis.
The principle is simple: AddThis were kind enough to define their own filter for the plugin’s output. The plugin plugs itself into this filter, and makes an adjustment to the Tweet button.
To use it, put
addthis-modifier.phpinto yourwp-content/pluginsfolder, open it up and set your twitter name where indicated. Activate it, and you should be good to go.Download the plugin: AddThis Modifier Plugin
For extra marks: Here’s some code you can use to replace line 14 (the $twittername = … line) to provide a different Twitter account for each post author. Is that not awesome?: