Can someone point me to the forum discussion on name your own price hotels in Amsterdam?

Try http://biddingfortravel.yuku.com or http://www.betterbidding.com.
Both of these sites have tips on bidding. Also people posts winning bids.

Here's another article that was on TA.

http://www.tripadvisor.com/Travel-g188590-c115136/Amsterdam:The-Netherlands:Web.Hotel.Bargains.In.Amsterdam.html