I like to use Data.SE to view usage stats for some of the sites, however deleted posts are not included on Data.SE and I think this skews the numbers quite a bit, particularly on sites with a lot of deletions.
Would it be possible to include some limited data about deleted posts in Data.SE to make statistical queries more accurate?
You could clear the non-public data fields of deleted posts, such as
Posts.OwnerUserId to address privacy concerns explained here. You could even leave the
PostId set to 0 since I know SE doesn't want to provide users with a way of searching deleted questions.
The data I would mostly be interested in is
PostHistory (date closed, date reopened, date deleted, etc), and the fact there was a deleted question in the first place. Up/Down votes, Score, Tags, and View/Answer/Favorite count would also be preferred.
This would make the statistical queries accurate, while still removing the information not meant to be visible to the public.