I rarely use it anymore, I generally do better with Amazon and a few others but on occasion it's the only place to find good stuff you want or need inexpensively.
I still use it, especially as a buyer, but my attitude is "I hope I get lucky instead of getting burned." Its like pulling a slot machine to me.
As a seller, I'm much more methodical and precise with it. We ship IMMEDIATELY, with insurance and signature confirmation, and still, we get burned about 1 in 20 transactions.
I think I've had 4 negative feedbacks in 10 years and 4000 transactions as a seller? And in every one of them, eBay sided with the buyer (one who eventually wound up in prison for charging her purchase to a stolen credit card, $1900 which I had to eat, even though PayPal approved it. The cash came back out of my account, and my merchandise was gone forever. Sucked being me that day, and yeah, I got a judgement that I'll never see
But I admit, I've made a killing having it as an option. Great exposure to markets I don't have, but you just have to expect to get burned, and move on when you do.