Not that I think anything nefarious is going on, but I think I've seen at least 3 edited posts from various people so far. Thought I'd mention it just in case.
if the edits are just to add stuff so to avoid double posts is fine, esp if it is introduced as "EDIT: ".
also very minor edits (like typos) are typically ok.
EDIT: also wanted to mention that the spreadsheet is updated. usual rules of usage apply.