[beetman]

Considering that almost every arb I've ever seen posted here has the "good side" of the arb at a book with a relatively small limit, I'm not sure how you can make that statement. I also don't know a single serious sports bettor that would agree with that statement. Pretty much every serious bettor I know is intimately familiar with the necessity to keep certain things to oneself.

For the most part Chachi is right on the mark here and I'm absolutely shocked that just about everybody disagrees. I haven't even been betting sports seriously for all that long, and I couldn't even begin to count how many great betting opportunities no longer exist because they were heavily publicized, too many people got a hold of them, and the opportunities were burned out. The liquidity present in the sports betting marketplace is surprisingly low.

As a simple example of how publicizing these bets can burn out the marketplace, the soft sides of these posted arbs are frequently SIA lines. SIA's lines aren't nearly as juicy as they were 3 or 4 years ago, and SIA has also stopped offering a lot of the profitable types of bets they used to offer.

Intuitively you might think it's worse to share poker information than sports betting information because poker players directly compete with each other, but the low amounts of liquidity present in certain aspects of the sports betting market make that not the case.

I'd love to be able to share everything I know with other people, but the marketplace simply won't bear it.