Wow! Congrats, Jellybean on facing the weight gain, and persevering!!
I pretty much have to weigh every day for the same reasons--I didn't over the holidays, and put on 10 lbs (over the course of a month). I noticed my clothes weren't fitting right, but blamed it on the dryer. . .and avoided weighing myself because I knew it would be ugly!!
Weighing in every day helps me be accountable. I do it in the morning, so if the scale goes up I am extra focused that day. That's as far as I go though, because I do tend to naturally fluctuate some throughout the month. So, I think weighing in every day is good as long as you are comfortable with the fact the scale may move oddly sometimes.
