No, I don't mean the trouble all those college kids are getting into, I mean Charity Muggers, or "chuggers" as the limeys call them. I was at lunch with @tangyslice in Davis square today and observed him live-blogging the local charity panhandlers. Being who I am, I couldn't help but geolocate Tangy's observed data.
Perhaps you can use this to plot a nag-free course through the square. Good luck, and watch where you step. If you really want to make a difference, perhaps you'll make a donation to Jane Doe Inc., the Massachusetts Coalition Against Sexual Assault and Domestic Violence, which is the featured charity of Social Media for Social Change.