We have talked about the importance of providing relevant messaging to consumers, at the point time that it is meaningful to them.  What we haven’t spent a lot of time talking about is how hard that actually is to do.  This is a great post from GigaOM that highlights Twitters failure to provide such relevancy.  It could become a matter of survival for Twitter.  If the “promoted tweets” – what you and I know as ads – that are inserted into my timeline have no relevance to me then Twitter runs the risk of not just annoying users, but creating the twitter equivalent of ad blindness