Following on from my last piece about Twitter, I also spoke with Craig Cmehil, another Irregular and SAPper. For some weeks, Craig has been running a side project to develop a Twitteresque alternative for use inside the firewall. Wordpress's Prologue might make a decent alternative but Craig's work started before that came along. As a SAPper, Craig knows that security and scalability matter. He also knows that while Twitter has great utility, it could be so much more. The project is still at the 'small pilot' phase which means that small numbers of people are trying it out to see where it has application. So what does it do other than provide a river of instant messages: People can create...