German investors the Samwer brothers have invested an undisclosed amount in Twitter clone Frazr.com, reports alarmclock europe, following a story from a German trade title. Germans are really taking to micro-blogging via SMS using Wamadu, Faybl, 1you, Sloggen, and Partnr.de. Does Germany really need five Twitter clones? Most were launched in March/April. You decide…