You're just over complicating the process Andrew.

This +Ok formula is only ever going to be understood by people familiar with the Boonex Dolphin platform. The members of these sites are just going to be even more confused than they already are on a website that is riddled with poor explanations, grammar and usability/functionality.

Personally, I agree with DosDawg, you can't go wrong with a thumbs up / thumbs down - It's a universal symbol and everyone gets it.

Don't make Dolphin over complicated, see more you'll just end up pushing people away.