I'm currently looking to see when my pageview-to-comment ratio rises above 2. This means when my pageview count exceeds twice my comment count. Currently the ratio is 2,311 / 1,372, which is about 1.68.
Whoever catches my pageview-to-comment ratio as little over 2 as possible (i.e. as low as possible while still above or at 2) will receive a free request with a value of up to 150

. If you catch it at exactly 2, you will receive a request with a value of up to 300

. Be on the lookout!
The next kiriban I'd do is when my pageview-to-deviation ratio exceeds 100. That one will take much longer to happen, and by then I expect that the request value will be up to 600~1000

as my experience also increases.