OP, can you tell me if you are satisfied enough with some of the different user responses to your accusations? If you are satisfied then I suggest you close this topic, while if you have some other evidence that might support your suspicions, please let us know about it.
I just think that you're only ruining the reputation of other users for accusations that aren't proven to be true, but there's nothing wrong with suspecting something for absolutely credible and very strong reasons.