[Benman]

This question points out some shifts in in 2+2 thought/terminology that have taken place between HPFAP and SSHE. A semi-bluff used to be described as a bet or raise with a hand which, if called, doesn't figure to be best but has a reasonable chance to outdraw. SSHE sort of does away with the whole ahead/behind distinction and has you think instead in terms of equity. Betting some four flushes on the flop is still technically a semi-bluff since if called you're probably "behind" in the sense that if the hand ended there you'd lose. But it has positive expecation/equity/value, so it really isn't what you'd traditionally characterize as a semi-bluff. Maybe it's time to re-define semi-bluffs: a bet or raise with a hand when you don't have positive equity, but isn't hopeless. Ie, you're rooting for a fold, since your equity is negative, but might luck out. Better still: a semi-bluff is a bet or raise with a hand that has a negative pot equity if called, but a positive combination of pot equity plus fold equity (the added value you get becaue all your opponents might fold.)