I had several snipes setup for auctions today. Several went fine, but a long string of snipes did not fire. I do not see any sort of log or debugging information to provide you other than my snipes are higher than the winning bids.

Hello Sandy,
Thank you for your question about a long string of snipes. We have a throttle (limit) on the number of snipes that free users can execute in a small time frame. That limit is increased significantly when the account is upgraded to premium.
As a result of your post, we are going to improve the system to make this clearer. We regret any confusion this may have caused with your snipes.
Please let us know if you have any other questions, or require other assistance. We are happy to help.