I guess we all become criminals if s.978 passes.
Well, no.
The statute can only be enforced in instances where uploaders are "willfully" infringing on a copyright with intent to make money, and is only punishable if said uploader makes (or the game company loses) over $2,500. That's probably not true about a vast majority of the walkthroughs on streaming video sites, meaning our vicarious Gitarooing should continue unabated.
Here's an link to the actual bill.
http://www.govtrack.us/congress/bill...?bill=s112-978
Personally I think about 90% of all the people moaning about it have never read about it.