Honestly, http://www.rgtr.com/trial/, it's not rocket surgery.

His comments are pretty much on the mark in regards to burning through people early I think. Not sure whether it was because the beta wasn't a finished game though, it was quite playable for me but just didn't grip me as much as their "rockstar developer" format of the time promised.

Will be curious to see which direction they'll be going with the upcoming deployments, I think that will influence their subscription numbers a lot more than these (rather short) trial promotions.