Somerville residents get their chance to sound off tonight on Greater Somerville with Joe Lynch and KyAnn Anderson. The show will feature open mic night tonight for callers with praise, prose, prognostication or a well placed prediction about Somerville politics, developments, and the people, places and things that shape our corner of planet earth. Try this on for size. How well do you think the city has done so far with managing the wicked winter weather? Let us and Somerville know.