If you edit an old post, it bumps it to the top of the list on the home page. I don’t really like this behaviour, and might change it at some point. For now, that’s just how it works.
Welcome. This will act as a network-wide blog that is all about modified and what’s happening with it on a meta-level. Server changes, administration, new plugins, new themes; I’ll announce them and talk about stuff in here.