Before discovering Gixen, I was often frustrated by losing auctions at the last second. Here I thought I was winning with my low bid. I could practically see the item in my hands, then.....BOOM! It was gone to someone else. I realized someone knew something that I didn't. I goggled "snipe bidding" and found Gixen.
Since signing up, I've used it numerous times and usually win whatever I want. Of course, high bidder always wins so you have to bid your personal maximum, but I usually win for much less than my max bid.
I've found the service to be 100% reliable, accurate and safe. I've recommended Gixen to everyone I know.