Caught by the spirit of the times (from the German term Zeitgeist). The typical experience of being zeitgeisted is the realization or epiphany that some personal characteristic, predilection, or experience believed to be special to you is in fact common out there in the Zeitgeist. You believed it to be uniquely yours, but in fact you were probably interested in it for the same reasons that dozens or thousands of others are as well. Your pursuit of originality was futile! Now you have just been reminded of that fact.
“A week after he launched his new website on (some obscure subject), G. was zeitgeisted by Wired Magazine publishing a feature on the exact same subject.”
The condition of having had some special unique interest or proclivity, and then discovering that it has just been featured in media or elsewhere; the ensuing realization that in fact your interest was not unique, but in fact others just like you were pursuing it as well; the revelation that the interest you thought was unique was merely a reflection of the spirit of the time.
"Did you hear that Garrett got zeitgeisted again? He just launched that blog about vintage (somethings) a month ago, and there was a pictorial about the exact same thing in the new Wired Magazine!"