“RTM”:http://www.rememberthemilk.com was already the best online To Do list manager, and they have just made another big leap today with “3 new features:”:http://blog.rememberthemilk.com/2006/01/now-with-tagging-searching-and-smart.html
* tagging (finally) and tag cloud
* advance searching (I don’t really use search, but it’s handy for the odd occasions)
* smart lists, which are smart filters or persistent search, depending on how you look at it.
Obviously, tagging is the biggest addition here. I can now have my tasks reduced to just a few lists and tag them instead. Or may be, it should just be one big list with free tagging. Hmm…