Group items tagged

Twitters 140 char limit is great as it means spammers can never really overpower anything. You all know the spam comments on blogs with mighty many URLs etc. Not possible here, the volume of spam will need to be divided into many tweets.Twitter clients can do most of the filtering. Not just black/white like many clients do these days, but once they learn about tags, about poster profiles (lookup on mr. tweedeck, etc.) they really can shine: what is a tweet worth from someone who has massive stuff auto-piped into the system? Maybe allot, when it is clear the tweet was NOT auto-piped, i.e. contains individual content.What I would like to see is a client that analyzes tweets based on tags and word (families). Imagine you are at SXSW and have a tag cloud of the real stuff going on. Not just the #tags, but also other words that get used often, used in combination with #tags. There's a lot of information to be used well. Open the iPhone and see what people really are tweeting. No more individual tweets, but tweet heat maps of concepts, coincidences and co-concurrences.Nova, would that not be something to create?