You might want to additionally split this by:<p>- Free v paid/iAPS<p>- How expensive the app is<p>No doubt there's other ways to split it (e.g. "controversy level", "complexity") but those are potentially a bit tricky to quantify.
Cool idea. How accurate do you expect the figures to be? Might people whose apps are reviewed particularly slowly be more inclined to report review times, thereby skewing results?
[OT] While I can see the the usefulness of gathering data from tweets keyed by hashtag, I don't quite get the point here. I would expect a web page to have a more direct means of entering data.<p>It is a great idea for gathering data from tweet followers, however.