I think it's wacky that they send out the emails on Wednesday AND Friday and they are the same email! Just send it out on Wednesdays!
At least the variety of cities from BUR and LAX have varied, the weekend fares on UA recently have been to places like Yuma, or Santa Maria. I'd venture to guess that's because it's summertime. Come fall I'd bet there'd be better city choices on all carriers weekend specials <fingers crossed>.