Hello,
I recently posted household items on Nashvilleindian and two days back received call from 424-653-6630 trying to buy items without any negotiation price, he said he will send check, and pickup guys will pick up from your home. You will receive multiple calls from this number, after all I blocked this caller 
I found related information here.
http://www.portlandindian.com/desi/discussiondetails.asp?id=18384