Is there any harm in deleting redirects? Initially, these might make sense. I'm thinking that at some point, it might be a good thing to parse these out. For example, I don't need search engines bumping into a redirect from 2012.
Any suggestions on finding existing redirects? Any way to mass delete redirects?
On my forum I have changed the default to one hour expiring redirects. So after an hour the redirects automatically get deleted. Redirects can be confusing to users and I think it's best to remove them after an hour.