Treedolist

Treedolist is a hierarchical system for organising personal information. You can store tasks, lists, weblinks, notes, RSS feeds and more. You can manipulate your tree in a simple, intuitive interface with drag-and-drop or keyboard shortcuts. You can categorise items in your tree by due date or urgency. You can share single items or whole branches of your tree with your friends.

http://treedolist.com/

Small object of grammatical desire

"The sixth edition of the Shorter Oxford English Dictionary has knocked the hyphens out of 16,000 words, many of them two-word compound nouns. Fig-leaf is now fig leaf, pot-belly is now pot belly, pigeon-hole has finally achieved one word status as pigeonhole and leap-frog is feeling whole again as leapfrog."

http://news.bbc.co.uk/1/hi/magazine/7004661.stm