For the benefit of others reading this thread, it's important to clarify that KVS has certainly never been a scam for me. On the contrary, it has provided me with precisely the information I wanted for a price that I felt was reasonable. It has been a useful tool for me, and I have not encountered any problem logging in or accessing my login credentials. The source of the data is not a concern of mine.

Others may have a different view and different experience.