I have added people in the past to my twitter @graphicbreeze only to become bombarded with useless one line yakkity yak followed by a direct link to their homepage. Never anything useful with links to things I could find interesting or helpful. How much is too much for you? I am trying to gauge what I should limit myself to in regards to tweets a day I do. So tell me how many tweets a day from one person begins to piss you off?