FYI- Thank you for the informative posts that helped me start grabbing good cc offers in late 2011(Did Amex gold for 100k pts, Citi 50k and Delta Amex 48k). I think I have the hang of this stuff now.
I am sure most of you are familiar with MC paypal card. They are pretty much my default card for gas/restaurants(3x points). Points only convert at about 83 cents on the dollar(so 6000 pts for $50), though. However, they do convert to cash(through credit to paypal account).
Also, they give 2x on any paypal transaction(so roughly, 1.66%). That is my default for online transactions where I am combining with CB sites offers.