Hey Guys, I am new to the IM side of things, but I am deep into programming (esp. Ruby, Python). I have been creating several web apps since last few years. One particular web application gains quite a good amount of traffic (around 2k-4k UV per day). I am considering a new promotional strategy. With this strategy, I can get these visitors to perform a simple task for me - any task, except asking them to provided their CC details or purchase something. My expense for this strategy will reach up to $0.5 per converted visitor (the one who performs this task). Conversions will be quite high, in my opinion. So, my question being, with that price tag of $0.5 per converted visitor, what method should I be looking at to monetise this app?