Recently, I have noticed rapid turnover of the restaurants I frequent in the SMF & SFO areas. A couple times recently I have gone to a regular destination (such as Andale in SFO), only to find it dropped out.

Likewise, the Una Mas restaurants in SMF have been in the program forever, but are not in the most recent book. OTOH, I got credit for a visit to Una Mas this week! A rare case of a mistake in my favor?