Twiddla, a free service that lets users draw and annotate webpages with their peers, has launched a new version of its site that introduces a number of new features. Compared to enterprise-grade collaboration software, Twiddla falls a little short - there’s no screen sharing or video chat, and the software seems a little buggy. But for ease of use and compatibility it can’t be beat: the browser based AJAX software is platform-agnostic, requires no plugins, ...