Does anyone know a way to sync a wordpress account and a blogger account?

I don’t know if this is what you are after… but I believe that you may find a good solution by using some sort of 3rd party blog publishing application. Many of these applications support synchronized posting to multiple blogs on different platforms. here is a roundup I found of some desktop clients. granted, thats only what I turned up with a quick search. it sounds like ecto has a pretty strong following… but there are also some freeware clients out there.
I still don’t think that this is going to let you “sync” comments (take comments posted on one blog and display them on the other), but it will let you read and respond to the comments in one place.
hope this helps…

Ping.fm.

ping.fm doesn’t work with your own hosted wordpress blog.