Provisional tag — moderators may want to change the name, or delete this if it doesn't seem separate enough from the "Forecasting" tag. Could also be "betting on beliefs", though that still isn't very specific.
Some people use betting as a way to signal the strength of their views; they might offer a bet as a way to identify a crux in a debate, or challenge a critic they view as insincere.
This tag tracks posts where people make public bets on their beliefs (or discuss the practice of doing so).