I also came across a too good to be true ad for a Mountain bike. Searching, I found the ad posted across the country under different names and locations. I had the local listing at craigslist.org taken down but continued to email the "seller" to find out more about him. When he suggested rawshipping.com I also did a whois serch and found it was only just established. Hmmm. Looking further using nslookup I found it was being served by yahoo from p3w9.geo.re2.yahoo.com so I reported it to yahoo. They sent back a canned response asking for more info. I have just noticed another ad on craigslist and had it taken down also. I have also replied to yahoo to get them to investigate rawshipping. Hopefully they will do something this time.
-Dan
-Dan