We do delete quite a lot for "not straight".
But we do find that there are some which intuitively seem not straight but we cannot be sure (and for a few it's an optical illusion). Buildings can be misleading when the lens has a fairly wide angle (not talking about fish-eye of course, which is not permitted at all).
That said, it is clear that one or two members have particular difficulty - probably using mobile phones - and did not discover the ability to straighten, despite multiple deletions and explanations. Perhaps we should be less tolerant.
Chris, would you kindly pick a handful of fairly recent ones (but not from the last few days as Admin colleagues may not have reached them yet) - and email the URLs or ref numbers to firstname.lastname@example.org
. That will help me review this.
"Only one on site" photos are kept, though we do ask the member to replace, if possible.