I had to look at it for 2 minutes to find the difference between both: the "g" and "q".  However, I don't think is possible, as you can claim everyones hashrate if that's possible.   "Hey, I accidently filled in an address I used before to pay someone" .. You're pretty screwed if someone gets paid for your hashrate in that case.

However, those two addresses look really familiar. I'm interested in Terk's response, but I think it's quite hard (as it's an automated process too).  How much hashrate did you put into Clevermining last night?