One interesting fact about both the google toolbar and this new function – google sidewiki – is that none of them works with google chrome(which is google’s new browser & OS wanna be). On the other hand, it looks like you can add data(including html data) about anything on the page – portions of text, the whole page, or a site, and this data will actually be visible wherever online this portion of text/article/paragraph is quoted/posted. Nice social aggregator.

Announced as “Help and learn from others as you browse the web” via the google official blog(the api is also released), this tool can be something useful/helpful if used by the right people with the right intentions or can be spammed or it can be stuffed with bad content or other nasty things that your competitors/haters wanna say. The principle is also that the most relevant comments are first, and seemingly there’s more under the hood technology-wise than it appears! Hopefully there will be a way to identify/filter/reject/delete the spam/hater comments that can appear on certain sites…