This is a hot topic! I'm surprised to see it back at the top. There appears to be some heated debated, and if I take a step back I can see both perspectives.
First, WOL makes some calculations that make sense. He does have a few errors in that OSB has changed their bonus plan, but I can accept his numbers. In addressing this issue, as has already been done, it does make sense to offer specials to attract new customers. They have established a client base, and have since reduced their bonus offerings. Without offering a little something extra, I doubt they would have gotten as many clients. I see no problem with this. Also, look at some of the better books out there; they continuously offer 15% or 20% bonuses. WWTS has them every couple of months, BetCBS has 20% reloads all the time....it's not uncommon and those books are very successful. The math doesn't take into consideration the fact that most, or at least many people will continue to play after they meet the rollover. It also doesn't account for the bad habits of some bettors that tend to scew the numbers to the books favour even further.
This thread obviously points to the fact that OSB is doing many things right. Many clients of theirs have responded, and many (including myself) have positive things to say. The service at OSB has been great, and the payouts superb. Without this fact, this thread would have been much shorter. People enjoy playing there, and it looks like they are on the right track. I think this fact should be also addressed, rather than just issuing a warning.
I think WOL has brought up valid points, and many have been addressed appropriately. That said, there certainly is a risk involved playing with OSB, and this risk could be perceived as high by some as they are a new book. I can accept that. I think the problem some people have is that there are so many other books that have gotten valid complaints that threads issuing warnings could be started about. A warning about a book that has no slow pay or no pay complaints, when there are other books that have complaints against them, perhaps isn't the best approach. Maybe a general thread discussing the math behind bonuses and such would be more appropriate. That allows posters to disect the information and then apply them to a wide range of sportsbook.
Ok, I'm babbling, sorry for that. I extend a handshake to OSB for a job well done so far, and I also thank the various watchdog sites for their input. I think TOW and SBR are great resources, and I'm happy to have them at my disposal.