A Twitter Bot that regularly tweets current top posts from the EA Forum

The EA Forum is a great place - and I come here less frequently than I would like to. I do however check my twitter feed regularly, so I thought it would be nice to have the current top posts in my twitter timeline. 

To that end I created a small Twitter bot (@EAForumPosts) that does exactly that. Essentially, the bot regularly checks all posts from the last 6 days and whenever a post that it hasn't tweeted about before reaches more than 40 karma points, the bot will make a tweet. You can find the code here.

I'm not sure whether '40 karma' is the best way to determine which posts to tweet. Maybe a different cutoff would be better. Or some other criteria? Maybe taking number of comments into account?

I also thought about creating one that tweets randomly selected top posts from the archives. Let me know if you think this would be useful.