I'm not really sure Flightcaster is in a position to start donating money - they aren't profitable yet AFAIK. However, they have been open-sourcing a lot of their Clojure projects, which is a great way to increase the visibility of the language.
I am looking forward to seeing FC reach Clojure-donation-profitable :)
So do we! We won't wait until then to start giving back. We just sent in our contributions, both from FC and personally. We've gained a tremendous amount from Rich--happy to play a part in supporting him and Clojure moving forward.