B decays to charmless inclusive final states are discussed. The generic process is the loop-induced b..-->..sg/sup */, g/sup */ being an on-shell or off-shell gluon. We include the cases when the gluon momentum is lightlike, timelike, and spacelike. The timelike case includes g/sup */..-->..qq-bar and gg splitup. Our findings are as follows: (1) B(b..-->..sg/sup */)approx. =1% for three generations; (2) an experimental observation of charmless branching ratio greater than or equal to5% would (conservatively) imply the possibility of a fourth generation; and (3) charmless branching ratio >20% would be difficult to accomodate in the standard model even with four families.