Neat Plugin! I'd use it, but a couple questions/concerns first:

1. Why does it have to be used on a new/clean WordPress install? What if I want my Tweets to be part of the flow of the rest of my main content?

2. Why not post format support? (This is a fatal shortcoming for me.) I wonder if Ozh would accept a patch to implement post format support. To me, this is a no-brainer: Tweets are perfectly suited to the "status" post format, and supporting post formats would provide excellent integration with Themes that design in support for post formats.