I’ve been really addicted to Google offerings over the years. Google allows you to do some things you just can’t do any other way. Some examples are Gmail, Reader, and Voice. Advertisements
I recently had the opportunity to convert a large-ish Movable Type system to WordPress for speed testing and usability evaluation. By “large-ish” I mean 12,038 posts, and 43,043 comments. This may not be large by others’ standards, but it was plenty large to me.