Minimum Reputation before site logo appears on Flair

Question

What is the minimum reputation required before a sites logo will appear on the combined flair?

My flair looks like this:

But I am a user on Superuser and Apple Answers among others. Joel's post shows examples with 7 sites, is this the maximum?

Answer 1

If you read the comments on the blog post about the flair, Jeff says the minimum rep for a site to be included is 200.

_{There are other options if you want to work around this.}