A few months ago I read about a strategy to bet any team where the lines for that team were better at the "square" books (Bodog, SIA, BookMaker, etc) than at Pinnacle.
Example: Pinny has Mets U7 +108. Bodog has it U7 +110 and BM has it U7.5 -125. The play would be the Under since the square books have more favorable numbers (this thread is not meant to debate whether U7.5 -125 or U7 +108 is better).
I doubt strictly playing these games would be +EV, but maybe it would make a good filter.
Does anybody have any numbers related to this strategy?