2009/10/22 Sage Ross ragesoss+wikipedia@gmail.com:
But I haven't seen anything really compelling about sidewiki in particular yet. It seems like a crippled alternative to the "blog comments" Firefox plugin Google used to have but then disabled.
It reminds me faintly of google's searchwiki, which let people annotate search results:
http://en.wikipedia.org/wiki/Google_SearchWiki
...and I suspect it may remain about as obscure.