Meshly takes after twitter, in that you can send your posts to the site via instant messaging. It´s easy to do as they give you step by step directions through your im client. Meshly is about uploading links. You choose which category to put it into, and if you don´t think it fits, you can create your own. The idea is that communities will grow around people with similar interests through their link categories. You can also vote and comment on links, working like digg. The posts with the most votes make it to the cover page for each content channel.