How often do you change the purse or bag you're carrying?
I change it when ever the mood strikes me, really. If I'm just going out for a while and don't need all my "stuff" I'll throw my wallet, cellphone and sun/glass cases in a smaller bag. I'll change it with seasons, but mostly it's to match outfits or my mood.
What's your favorite bag in the world?
Right now it's my Ameribag Healthy Back Bag in a tapestry material with (whatelse) palmtree and monkey print. It's got lots of pockets and holds quite a bit of stuff.