Hey Andrzej, thanks for the feedback - sounds very logical. You're right - dropping it on GitHub will not make any $'s, but it might enable one or two other developers to get some value from it, and if I'm honest, that's ultimately what I want.

I'm not worried about making money from it per se - but would be happy to keep it maintained, updated and bug fixed if I could derive some nominal fee from it (I guess licensing).

I designed it to be extremely modular, so developers could add new spam checks and tune it to their needs with a minimum of fuss - it just might take some time to get all the components installed + running (I could create an install script methinks).

Thanks again!