Ahh, remember when you booked a plane ticket and that was the last time you took out your wallet? I sure do, but with all the standard à la carte charges now, there are only so many potential fees left — like picking out seats?Earlier this month, British Airways announced a charge ($16 and up) to book seats in advance, up to 355 days whether you're riding in first or business classes . . . or back in economy. The alternative? Wait within 24 hours of the flight's departure to race other passengers to pick your seats for free. I've experienced the unknown of the unassigned seating process with Southwest but, for standard-fared tickets, should this even be a factor in the booking equation?