I've been riding for fitness/commuting for about 6 months now. I recently purchased a Trek 7200fx. I've decided I want to try clipless pedals for all the advantages mentioned here on the forum. I've been looking for inexpensive pedals that also have a platform available to use uncliped.

Today, I found a pair of clipless pedal adaptors on eBay:
http://cgi.ebay.com/Wellgo-Clipless-...QQcmdZViewItem

Does anybody have any familiarity on how these work?

If I like riding clipless, I'll probably upgrade pedals early next year when I start a new job.

Thanks for any help you can provide.