I think extensions could be a great way of extending an existing business, indirectly. Let's say you make an extension that works with your site to let your use

I think extensions could be a great way of extending an existing business, indirectly. Let's say you make an extension that works with your site to let your users create some custom themes for it, really powerful stuff that you couldn't integrate into your own site because it's way too heavy. Then once all the theme is designed they can upload it to your site and use it. I'm thinking such a fun feature indirectly helps your business by giving your fans something to chew on and actually making something productive that can benefit your other users. (You'd perhaps have to review the designs and approve them before one can be shared with others because you don't want a theme that obscures important messages and such).