After trying out both Integramod and IMPortal I found IMPortal to fit my needs more as it didn't come with alot of "fluff" that I felt really wasn't needed with IM.
Don't get me wrong, both are great, but IM just wasn't for me.
On that note, what happened with development for IMPortal?
It just died with IM becoming the main/only focus (other than the helpful support)?