Do you use the "No Wait Rebate" option?
I ordered a cpu from tigerdirect.com, which had a $50 MIR. The rebate is processed through Worldwide Rebates, and offered a "No Wait Rebate" option.
Basically, you pay them a small percentage of the rebate (in my case $4, or 8% of the rebate...im not sure if it varies with price), and they "expedite" rebate process from around 5-8 weeks down to 1 week.
So how many people use that option, vs waiting for the entire amount?