I don't have Chase freedom card, any benefit and sign up bonus? I thought the card only earn cash back. Thanks!
Freedom offers Ultimate Rewards (UR) which can be used for many things. Sapphire preferred also uses UR and allows you to transfer to CO, Hyatt, or BA at 1:1. And you can put your UR from freedom into your sapphire UR and transfer all of them to those programs.
The real benefit to freedom is that if you are a chase banking customer you get an additional 10 points per purchase. This is great for small purchases especially if you then transfer that to CO miles.
I believe the freedom card is offering some cash back sign up bonus (follow Dan's link above). I am not sure if that comes as actual cash back or in UR points.