Really? This is the Tip Of The Year? Strings get changed as needed. More often in the summer but never more than two nights on a set of strings. That goes for each guitar I take to the gig which is usually two. Most of my house guitars get changed no less than once a month. I use to change em regardless but since D'Addario isnt sending me free strings and Ive gotten more guitars, Ive had to cut back. Really though, changing strings doesnt seem like something we'd need as a tip and certainly not Tip Of The Year. You have to be kinda thick to not know how or when this should be done.