I got to know Kampyle through some personal relationship and it seems like a great service that is much needed by many web sites/services. They do several things but the basic web feedback service is nicely crafted. I used to work in the past with OpinionLabs, which always seemed to me a bit outdated in terms of design and service and now Kampyle provides a much better alternative.
P.S. I am not sure about the origin of the name Kampyle, which is a bit odd, especially for an Israeli startup. After some thinking I came up with the suggestion that it is a name based on the word "compile" but expresses the way it is spelled by Israelis with heavy russian accent. Maybe:)