any sites out and around that are popular?
Im looking to do micro betting on outcomes we can deem are guaranteed fair and not relying on knowing how to verify provably fair.
No. PvP betting is not popular among bitcoin community, it is really hard to come up with good pvp game and run fair and entertaining service.
I know some services which offered rock, paper scissors pvp game, but I don't think they captured attention of the community.
Micro betting is another problem - if someone is interested in micro gambling they usually just play with Dice, micro betting pvp is kinda pointless.