So said Guy Kawasaki at the recent Radio Ink Convergence conference.  Guy schedules Tweets to run up to four times.  It's not spam, he argues, when these folks are following you willingly.  And running them at different times on different days maximizes the chance that the message reaches somebody new and minimizes the potential for annoyance. Now comes this supporting evidence: Mark Suster at Cloud Ave. weighs in with his experiments in timing Tweets – specifically on the qu