Winners for logo design contest are:
1st prize: Vak for 50,000 SWEEPs
2nd prize: lucky80 for 20,000 SWEEPs

Thanks all for participating. Unfortunately dev team decided that the contested logo design is not good enough for replacing our existing one. So we keep our original logo.

Vak / lucky80, please PM me your SWEEP address, I'll send you the bounty.