Bayesianism is only a predictor; it gets you from prior probabilities plus evidence to posterior probabilities. You can use it to evaluate the likelihood of statements about the outcomes of actions, but it will only ever give you probabilities, not normative statements about what you should or shouldn't do, or what you should or shouldn't test. To answer those questions, you need to add a decision theory, which lets you reason from a utility function plus a predictor to a strategy, and a utility function, which takes a description of an outcome and assigns a score indicating how much you like it.

The rate-limit on posting isn't because of bandwidth, it's to defend against spammers who might otherwise try to use scripts to post on every thread at once. I believe it goes away with karma, but I don't know what the threshold is.