I’ve auto-checked all links in the Directory, and have repaired all 404s (“not found”s). All 302s (“redirect”s) were also scrutinised and any link-breaking URL-changes were fixed, with the new URLs then being used to fix linkrot in the JURN site-index. Three dead journals have been deleted. About 60 journals have been fixed in total. About 25 “connect failures” / timeouts have been left alone for now.
Google will no doubt take a month or so to catch up with the new locations of some of the articles indexed — but the Google ‘Caffeine’ update is coming after Christmas, so that should probably do the trick.