Over time, we've dropped some hints about the possibility of a version of BitWise inbetween Personal and Professional, still designed for home users but with some of the additional security and encryption features of Professional. Right now, the working name for this version is "BitWise Plus" though this is certainly not set in stone. This version would be sold for a small fee, either a one-time fee or an annual fee. The Personal version would remain free and ad-free! Having a Plus version would also provide a way for people who are so inclined to pay for the service that they are receiving.
There's lots more information in the forums, and we would really like to hear your ideas as well!
Link: http://www.bitwiseim.com/phpBB2/viewtopic.php?t=770