I'm not jleopold, but I'll be happy to help as well. You can do a few things with users, tags, and domains. Following any of the three ensure they show up in your feed. Filtering them not only makes them invisible in your feed, but on global as well. Filtering names and domains is particularly useful for spammers. I will say it's best to be judicious when it comes to filtering, especially tags. You can miss out on some pretty interesting stuff if you filter out too much. As far as I know, there is now way to preview a post or a comment. However, you can edit to your heart's content and there is no time restriction on editing.Two basic questions: is it possible to choose which tags I want to see? And is it possible to preview the reply before posting it?