1. Is it safe, did you get your account recovered etc? So far yes 100% safe for me, you will almost always have some sort of scammers regardless of website, I honestly believe no site is 100% free, you can get banned, recalled etc.. it is a gamble but reviewing sites and feedback helps alot. I've used PA as my site for now I am not a big seller or buyer (7 items so far, 4 being Gold purchases, 3 being Account (1 WoW powerleveling, 1 WoW I Purchased a long time ago and 1 Aion account)
2. How good is the PA support? Good, no problems but it can take awhile once you wish to recall your payment from a no-show delivery.
3. Would you recommend insurance? Yes, I have had 2 incidents, 1 was with the seller of the account not emailing anything back to me nor did they speak to PA for the matter, I was than refunded the full amount.
4. Would you recommend buying an account on player auctions? I do but it helps to build up feedback/reputation, I always feel more comfortable buying from someone with 20-40+ rep, alot of farmers sell decent accounts cheap ($70-$90 zone).
5. Any other information I should know? If it's too good to be true than it probably is, always trust your instincts and although being naive is just apart of being a new buyer/seller don't trust everything someone promises. I have heard of PA having scammers but as for me I've only had no-shows which is a very easy refund.
P.S. I may sound like a fanboy but I am in no way advertising PA, I simply like their selection and it's fairly easy for me to sell something.