I'm laughing that sniping is 'increasing in popularity'. It's been the rule of any savvy eBay buyer since it's inception. I've been the King of the under-10-second bid. You HAVE to, in order to minimize your cost.
Here is a real example: I saw an engraved knife years ago that was something I HAD to have. It was mine at $650 for a while. I knew this would be challenged.
Well, the night of the closer I could not be there to snipe my final bid. I figured out what I would pay MAX and placed my final bid, even though I was the high bidder. It was MUCH higher than I figured it would go for, but now I
wanted this piece....

Off to the performance with my wife.
I come home and
once every five minutes within the last 30 minutes to close, a single bidder drove the price up another $600 in $100 increments. I won, after he gave up, but the price I paid was really exaggerated. He walked away shrugging. I had a $1300 knife, I
had to have....
Had I been there to snipe, I would have LET him 'win' it at $100 or $200 higher. At the closer I would have snuck in there and then grabbed it at the substantially lower winning bid. He would not have kept overbidding himself, guaranteed.
By bidding my full reserve early, it gave him
time to keep upping the ante and get
emotionally entangled in it--as much as I was. Sniping removes much of this and it's a one-shot deal.
Sniping is masquerading interest. Online auctions are an
emotional 'investment'. No one wins in cards with a bad poker face.
Coop