Pyramid was BFG prior to being renamed and released as Pyramid. BFG was around for a year and a half or more and has considerable test coverage, is actively developed, actively maintained. There was a sprint held at PloneConf last week and a number of presentations which resulted in a large number of issues being dealt with.

If you're coming from Django, you might find Pyramid a little offputting at first. It is a non-opinionated framework which means they don't make too many decisions for you. Template language, form library, etc aren't decided for you. I find this to be a good thing, but, if you're looking to pull together a bunch of pieces to toss an app together, you might be a little disappointed.

Many of the developers hang out on irc.freenode and groups.google and are pretty responsive.

I use it all the time for many different apps. I find it to be pretty lightweight, does what I need it to do, doesn't get in my way and doesn't have too much cruft. Relatively easy to deploy - almost identical to Django.

I don't believe Graham Dumpleton has gotten NewRelic's monitoring agents working with Pyramid yet if that is a concern.