I've started to use Google Reader to view news, articles, announcements, etc. on various topics that I'm interested in. To stay up to date with OSP and EJS models posted on ComPadre, in Google Reader click "Add a subscription" and type "open source  physics" and the newsfeed for OSP will be in the search results. Click the subscribe button.

Now, I know when people upload new models and I can check them out immediately rather than searching at the moment that I'm looking for something in particular. It's a cool way to stay up to date with OSP and EJS.