1. Primary rule: place a bid in your AS snipe that is the Maximum amount you are will to pay for the widget you're looking at. That way, if you get outbid, you won't mind that someone else was willing to OVERPAY
(in your opinion) for the item. Another one is bound to come along!
2. Lead time: Lots of opinions here! Awww just pick a time between 6 & 19 seconds!
Submit your snipe and relax! Check back after the auction and see how you did!
Good luck!
Jabbergah