I can be wrong -- usually am--, but it seems like a self-defeating move to me, for the most part. A lot of bids would just advertise the auction more, create more interest and competition, draw real bidders, eh? (Idea: maybe the seller got a friend to do that? Interesting.)
Robt.
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"Star Trek rare poker insert card. This is a very rare vintage star trek Limited issue. Geordi without his Visor!," per eBay seller. Asking $40 buy-it-now.
http://www.antiquegamblingchips.com/CelebritiesPlayingPoker.htm