Mansion is running a pretty incredible promotion to kick off the NFL season that you degenerates might want to jump on. Wager at least $1,100 (to win $1,000) on a point spread bet on the Steelers for their game on September 7, 2006 versus Miami, and if the Steelers cover the spread, you win a cool $1,000. If the Steelers don't cover, Mansion will refund your $1,100 wager within three days.
Yep, you read that right. It's a risk-free chance to win $1,000, with the only downside being that you might tie up $1,100 for a week or two, placing the wager and possibly waiting for a refund. And Mansion is completely reputable and not some fly by night book that might rip anyone off or not honor the promotion.
You can also simply hedge the bet and lock in a guaranteed profit of $450-$500 or so, by taking the risk-free bet at Mansion and then betting the other side of it at a book like Pinnacle. That way you're guaranteed to lock in a nce profit, albeit less than half of what you'd win if you just took the free bet on the Steelers and they won.
Exhaustive discussion of the bonus and hedging strategies can be found at this thread at 2+2.
Here are the terms and conditions from the site, as far as the promotion itself. One thing to note is to be sure to place the bet at the Sportsbook, not the Sports Exchange (which are two different beasts):
This offer applies to bets placed on MANSION Sportsbook only and is limited to the team and selection specified. Bets placed on MANSION Sports Exchange will not qualify.
To qualify, Players must place a single Points Spread (Handicap) bet of USD 1,100 on Pittsburgh Steelers for their game on 7 Sep 2006
This offer is only available on the first bet placed for this event
To qualify for this promotion you must be 18 years of age or over and have agreed to the MANSION terms & conditions.
The promotion is valid from 25 Aug 2006.
All refunds will be placed into Member accounts within 3 working days of the result.
All personal information provided to MANSION must be complete and accurate in all respects and we reserve the right to request additional information in order to satisfy our validation of this information.
Only one refund is allowed for each MANSION Member, residential address, email address, telephone number, debit/credit card or NETeller account number and shared computer. The refund applies exclusively to the first account opened in the event multiple accounts are opened.
MANSION may at our sole discretion limit the eligibility of customers to participate in any promotion or bonus offer.
MANSION reserves the right to withdraw or amend this offer at any time without prior notice.
All decisions made by MANSION regarding this promotion shall be deemed final.
The withdrawal of any promotion funds will be subject to MANSION withdrawal policy.
Offer is valid for limited time period only.
Players that bet both sides of the event with MANSION will not be eligible for a loss refund.