I'm interested in trying this product as I've heard rave reviews but thought I should get an opinion from this board.

I asked the guy at my local needleshop about it today, but he said he didn't stock it. He thought it might do something weird to the vinyl on a molecular level. Does anyone know if that's the case? From what I've heard elsewhere, the product is supposed to actually prolong vinyl life, so it doesn't sound like much of a problem to me.
Anyone care to share their experiences?