Web 2.0 Software

Dion Hinchcliffe offers us an intriguing roundup of the year's Best Web 2.0 Software.

I like the look of the online to-do list software, Voo2do.

He also considers the best online start pages. I've yet to be convinced that any of these will catch on but continue to watch the area develop.

The online file storage and word processing applications he talks about look useful too. Is the definition of Web 2.0 open enough to include these?