http://etherpad.com/transition.html
For those of you who dont know, etherpad was a really nice site where you could instantly create a shared text document, and then collaboratively (in real time - that is you could see others type) work the document, and also chat with other users.
It was a great collaboration tool for programmers - very light and responsive (there was no formatting). I think there was a simple implementation of document history (not sure though), and no registration was reqired whatsoever, either to create, edit or observe a document. To share it you would just pass the link to someone.
They could also be saved forever!!
They had a paying option, where you register and then you can set passwords on your documents.
Some time last year (I think) Google acquired them, and now their homepage shows the ugly white "empty" google style with the childish google logo. WTF?
The link above shows some "timetable", but with no indication as to why this got shut down.
Anyone has any ideas?
EDIT: this is a replacement, using the same code I believe, if you want to have an idea of what I'm talking about:
http://piratepad.net/