[videoblogging] FeedBurner Questions

[Clintus]

Hey everyone, hope all is well. I am looking into this service for my
blog and had a few questions about. First, does feedburner only keep
track of the people using their feed? Is there a way to get people
that may already be subscribed to my feed over to the feedburning
feed? Is there an alternative to feedburner for my wordpress feeds I
already have? Any other info I may need to know?