Yup. I prefer its website features to XFire's but unfortunately it doesn't keep screenshots or in-game videos so I just use both. I leave Raptr to track in the background unless XFire's overlay has some issue with the game (Raptr's overlay is pretty compatible with everything).
Raptr's also "Fused" with GameSpot, so two birds, one stone.
I like it, quite a bit
Oh, and Raptr also tracks cross-platform, including achievements.