ZDNet News has an interesting article on a new bill just signed into law in the US. Apparently this was bundled in with an unrelated bill and now make it a criminal offense to "annoy" someone online without divulging your real identity and is punishable by up to two years in prison.
If true, then Google is going to be busy with legal requests/subpoenas asking for the identities of various folks who frequent the c.d.o.s. Usenet groups as well as anyone involved in online forums/blogs where their identity are unknown or anonymous.
Now, it didn't say whether the bill is retroactive to past postings. I would suspect not and nor do I understand what the implications are to non-US residents like myself. For example, if you are not based in the US but uses a US-based service (e.g. Google), are you then subject to this new law?
I think it would be purdent to keep an eye/ear on how this will progress via the Electronic Frontier Foundation as they definitely will have updates on the implications/cases of this new bill.