Ok, played around this tool for a little bit. My first request is that it would be nice if you could resize the mini-badge. Second would be some options to configure what is shown in the large view - how many of the most recent emails to show.. which widgets to show... you get the idea.
Otherwise, the app itself seems stable and lightweight. If you hide the dock and don't prefer menubar apps then this is actually quite useful... because I imagine for a lot of people they are using konfabulator to do the same simple tasks.
Anyway, this is a fine effort... no need to slam the guy.