I have Rapportive installed on both browsers. Today, if I enter Gmail via Firefox, Rapportive does not appear on the screen. In Chrome, it appears, but I get the following message:

"Rapportive offline

We can't contact the Rapportive servers right now.

Sorry – we've got more people trying to use Rapportive than we can handle right now. Great minds think alike!

We're busy adding more capacity, so we'll be back shortly."