The significance of Yahoo Social Messenger 9.0 beta – which launched on Tuesday – isn’t just in its simpler and slicker user interface or cool new features. 9.0, it seems, represents Yahoo’s strenuous efforts to find its groove in social networking, something the company hasn’t been able to do very successfully so far. Will Yahoo Messenger 9.0 provide a decisive answer to the likes of MySpace and Facebook. Yahoo certainly hopes that will be the case, and in redesigning the application has focused on beefing up its social networking features.