Have you seen multiple stations spotted on the same frequency by the RBN, gone there, and discovered that only one of them is really there? If so, you've encountered what may be the last major problem with CW Skimmer, the tendency to spot calling stations as if they were the one CQing.
There was a bug in versions of Skimmer prior to 1.71, and in Skimmer Server prior to version 1.30, which caused stations that had been calling CQ to continue to be spotted as such even if they had left their run frequency and begun to search and pounce.This was fixed in the current versions of the programs, and I think I have written to everyone still using an earlier version to request that they get current.
So, what else can you do to reduce your individual contribution to this problem? The biggest thing is never to use "minimal" validation (set on the Telnet tab of either program. Instead, use at least "normal" or, even better, "aggressive". Each of these levels requires progressively more iterations of a callsign before it "believes" it, so if we use the higher levels the number of "false positive" CQ spots should be much reduced.
How about giving it a try this weekend?
73, Pete N4ZR