Finally, exactly what was needed for massive numbers of Twitter posts. An app that comes with its own Hotkey and doesn't require me to read and look at all the other posts when I want to post myself. Twitter Autohotkey Script, which includes TinyURL support (why not bit.ly I'm not sure, since its better...) as well, just lets you simply press Windows-T to easily launch a box which you can type in your tweet. No need for Launchy, Quicksilver, or anything complicated. Furthermore, unlike standard desktop Twitter clients, it is lightweight (currently under 4 MB memory footprint) and doesn't show me tweets when I don't want to read them. Sometimes I just want to get my thoughts out without reading others (whereas other times I want to read without writing)... this in addition to my previously mentioned Chrome Application Shortcut seems to be the simplest, most elegant solution.