Site sells software such as "Free DVD Creator"
The software works well except for the scheme funneling traffic and upsale through this site.
In order to run, the "free" software dials home to this site and asks you to solve a complicated math problem in order to run the software. Aside from the fact that it often counts correct answers wrong, it also attempts to get you to buy the "free" software.
I would advise against paid usage, because in the event the site evr disappears, your paid for software would stop working.