CustomScoop - Blog Search Watcher Still in private beta but could be a very cool tool for PR people in particular and bloggers in general looking to keep tabs on blog searches in real time. Thanks to Threadwatch.
dPolls: AJAX Online polls for free Create free online/dynamic polls using AJAX. Looks like the service is ad supported and the code can be embedded into existing blog posts. I have not tested it in Wordpress. Via Email
Writely - The Web Word Processor: Though this app is trying to find a niche, I find little use for it outside of the corporate arena (reminds me of Exchange Public Folders on steroids). However, the remotely hosted nature might deter those corporate souls. This app will let you create/edit your word processing documents online while sharing it with a bunch of people. Neat features include simultaneous editing, MS Word/Open Office integeration, RSS feeds for public documents etc. The service is free.