They still have Pennsylvania and Michigan listed as toss-ups right now so I think we can safely ignore their map. I thought they were just an aggregating site but slowly started to see their right slant with the videos/articles they posted and how they decided toss-ups.
Yeah, RCP has always had a blatant rightly-slant, but it's a useful aggregating site, as you said, especially for polling and general news. Just ignore their analysis.
Anyway, that Reuters poll is just more bad news for Obama.