Regretfully I've now had to set a limit of 0.1 BTC for new buyers since this seems to be the new big thing on Local Bitcoins. I currently have all my remaining coins tied up on three separate OKPay deals, mostly from accounts with no history (one has a single trade). It's a real shame as I like to try and accommodate new buyers - that's really what Local Bitcoins should be about.

I do think that if someone has marked the deal as paid then 24 hours is too long for instant or near-instant payment methods. Bank transfers in the UK shouldn't take more than 12 hours, even with security checks - but I can see why 24 hours is reasonable for that method. OKPay should be instant though. In fact with my automatic ads, if they've really sent the funds to my OKPay wallet they'll already have the coins by the time they come back to mark it as paid. If I have to have any involvement at all, they've marked it paid without actually paying, and as far as I'm concerned that's scamming behaviour.