In fact eMarketer have released some stats which show exactly how much rubbish is floating around on Twitter. The stats (August 2009) show that 40.55% of Tweets were deemed “Pointless Babble”. That with an additional 3.75% of spam and you are starting to approach a value that would make Twitter perhaps only 50% useful.

Tweets Worldwide By Content Category, August 2009

There is an upside to all this useless chatter on Twitter (and Facebook). It used to be on blogs.

This means that blogging will gain a higher reputation now that Twitter has taken much of it’s useless blog posts away. This will mean that more of the information found on blogs will actually be meaningful and therefore gain a higher ranking / reputation from search engines.