It depends on 2 things. 1. I find a cool pic that I just want it to be my Icon or 2. Depends on the club I'm active on at that time, so maybe quite often.
Like, every 2 o 3 months o so. I think I once kept on for a año xD I'm too lazy to change it lolz. But not tu have dado me incentive to change it..soo...I guess I'll change it today, o maybe not xD