I was pondering the closing of the CO GC loophole, and I remembered an experience I had a while ago.
I bought a $300 cellular phone with a $150 rebate, and charged it for miles on SWA RR Visa. I ended up not needing the phone because I found my original one (I thought I had lost it). I sold the new, sealed phone I had just bought on eBay for $250.
I was $100 ahead and with the miles to show for it.
Obviously this is a small-scale example but I wonder if we searched dilligently at
http://www.rebateplace.com we could find something promising........
The key is finding something you could resell for a high value.