Statistics worth monitoring

If you remember I was writing about my own stock statistics application on this blog already. You can see the previous entries here: about Fotolia's tag cloud, about photo views monitoring. Now that my application is running for more than a month I started to collect more than just the basic statistics I have built the application for. Basically my app monitors the sales and views of every picture I have on SS, FT, IS and DT. From these data I can calculate the following stats:

• How much did I earn overall or at a particular agency
• How many views I have had overall (excluding SS for obvious reasons) or at a particular agency
• Number of views/download - overall stat (all views/all downs) or per agency stat
• How many downloads do I have with a particular download type (overall, per agency)
• Detailed view on the statistics above for every month/week/day
• Total earnings/views per photo (independently from particular agency) - this stat aggregates all earnings/views of the different agencies for a particular photo (I made an algorithm to find the same photo's different id's at the agencies I am submitting to)
• Latest views/downloads per photo - this is useful to identify if a photo has lost the appeal to the buyers or it was not listed in any searches at a position visible to them.
  

These are the ones I currently monitor. If you can figure out some more that you think I could include in my stats I will do my best to include them. I plan to publish the app as soon as it gets stable enough for others, so stay tuned. I hope it will be useful for others. The good thing about the app that it collects all the data to a simple SQL database, so in theory you could write your own statistics queries. The bad thing that you will probably won't like the app because it does not have a GUI currently (ok, there is a simple GUI for prompting you the recaptcha image for shutterstock login, but that's all).