I've been tempted to add and bring my average price down on many occasions (so far it would have been the wrong thing to do) but decided not to imo there's just too much bad news and bad sentiment hanging over Bp and the share price has a mind of it's own. It's not the whole market thats down it's mainly BP which make me even more careful about adding.
The quarterly dividend is a great thing, my average price effectively drops every 3 months but the divi alone isn't high enough to justify diving in just yet.