FeedBurner and Dave
Dave Winer's got a post up talking about the concerns he has about FeedBurner that have grown since the acquistion by Google. Dave's a smart guy and is a big reason we have RSS in the first place. So you have to take his concerns seriously.
But as a former investor in FeedBurner and an active user of the service, I don't share his concerns. I point you all to this post on the FeedBurner blog from June 2005 where FeedBurner explained how easy it is to leave the service if you ever decide to do that.
That gives me all the comfort in the world. I love it when services make it easy to leave. When they do that, I tend to stay.