Thanks for your reply.
Regarding your frequency, we would be happy for a monthly article.
The only caveat is that we ask for a delay of two weeks before you repost on your own blog, though you can post a link immediately.
Regarding payment, truthfully we don't pay guest bloggers. Even Dr Michael Joyner, who is an internationally recognized expert in his field does not receive payment.
That said, by writing for us you stand to profit financially in other ways. As I wrote previously, we have 1.6mn monthly visitors, so by writing and linkig to us, you not only receive traffic from us, but it can have a direct effect on the traffic and rank of your blog, and that in turn has a direct efffect on advertising revenue.
So there are tangible financial benefits, but direct payment for blogging is not one of them.
I am happy to answer any other questions you might have.