I don’t want to pick on the SMH in particular, but it was the first site I found with some real comments attached:
BTW You don’t have to install Sidewiki to follow the comments, there is an RSS stream (e.g. the SMH home page) although it appears to be restricted the comments per URL not the whole domain. The API for this service also means we could expect to see a bunch of new tools appearing that take advantage of it, e.g. Twitter integration.
One defence against SideWiki are encrypted (HTTPS) pages. And luckily for intranet managers, SideWiki doesn’t support comments on internal sites. Yet, anyway…