It is rare when I need to do something specific and there's no a great plugin to do it already, but this is one of those cases. I am in pretty urgent need of a plugin that adds a page in the admin area (say, submenu of Write Post menu) where I can enter a postmeta tag and this postmeta tag is automatically added to the most recent post.
Why I need something like that? I am using RustLinksoff awesome plugin for link-based asides. To add a new link I usually need to enter the latest post's advanced editing and add another postmeta, which can get tedious especially if the page has to show another 10-20 postmetas already added to this post. So with this plugin I would have nothing to worry - just enter the postmeta's key and content and it's automatically added to the latest post.
Many many thanks in advance to whoever decides to help a lonely ape in his quest to banana perfection - my blog really needs something like this to ease me in constant editing.