Boxee should provide you with a RSS feed of your activity so you can share it on other websites.

I'm currently changing my website to use the excellent SweetCron (http://www.sweetcron.com/) lifestreaming software, and it would be great if aswell as showing my Tweets, YouTube posts and other online activity, I could also show what i've been watching on Boxee. All SweetCron needs is a RSS feed of the data on my profile page that shows what i've watched.