Your posts are not usual, one day you post 30 then in 5 days you post 5 posts, not sure how this should work. I pay you in advance how much, for 30 or for 5 posts?
When I come across interesting discussion, I participate. Otherwise, I dont. I'm confused why do u call it unusual ? I'd request for the advance of 100/4 = 25 posts per week, i.e. 0.025BTC. That way, even if u have doubt that I may run away with your advance payment, U'll be at a better position. Moreover, U'll be able to judge the posts and decide whether to continue for the next week. Please note that, I wont be able to change my sig to yours unless I get paid by the current sig campaigner. So, I'd request U NOT to pay me till then.