We rank spotters based on the quality of their photo submissions. This adds a gaming element to the site and rewards those who upload good quality photos consistently.
There are several different components including overall likes, favorites, comments and other factors. We will not be disclosing the exact algorithm we use in order to prevent gaming the system, but we can assure you that everyone has the same chance of ranking and we do not manually override any parameters.
The answer is pretty simple: upload good quality photos and receive good community feedback. If your images get more likes and favorites - it's good for your rating. If you upload an image which no one is interested in - it's not good for your rating. If high-ranking spotters like your photos - it adds more to your rating. And so on.
We want to ask everyone not to get into heated arguments about his/her rating, analyzing competitor's uploads or blaming them for some misdeeds. We are not going to tweak the rating personally for any particular spotters.