I couldn't care less. When my interests get "popular," I usually don't even notice for a long time.
I actually have a knack for getting obsessed with things that catch on later. For example, "The X-Files" was originally a cult show, as was "Farscape." I was fascinated by serial killers, profiling, and forensic evidence long before they became the focal point of every single "cop show" currently in existence.
I've come to expect it. 
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"If we fail to anticipate the unforeseen or expect the unexpected in a universe of infinite possibilities, we may find ourselves at the mercy of anyone or anything that cannot be programmed, categorized or easily referenced."
-XFG (no longer a moderator)