Hard to be certain with what I'm using right now, but where I put that generator appears not to have a roof. Looking at the ESRI imagery, there doesn't appear to be solar panels on anything back then, but I could be wrong.

My best guess is that the panels were there when I mapped them but got moved after roof problems. Second best guess is I screwed up badly.

Although I live only a few miles away I was working purely from aerial imagery. My health back then made surveys like that impossible and my health has declined a lot since then. So I've not seen you around.

Please fix. Easier for you than me with the tools I have to work with these days.

Oh joy, we're having the Cardigan name edit wars again.

FWIW, I'm happy with Aberteifi / Cardigan or Cardigan / Aberteifi. However...

You've managed to swap the name:cy and name:en. And somewhere along the way the English Wikipedia page has been discarded in place of the Welsh version. It's possible to have both.

Try not to do more damage than you "fix."

The talk page is inconclusive either way. As far as I'm concerned, if the actual page says it's valid then it's valid, irrespective of anything on the talk page.

Both memorial=plaque and memorial=blue_plaque have the status "In use" so neither is more valid than the other.

Standard carto treats both equivalently, rendering them with the same icon, so no reason to prefer one or the other there.

The Historic Places map, however, does render them differently. Well, it did do so until a day or two ago when it caught up on your change and now sees it as memorial=plaque. Here's a blue plaque; http://gk.historic.place/historische_objekte/l/en/index.html?zoom=18&lat=51.49016&lon=-0.08894&detail=3&select=n8051115695&pid=HaHbHcSaHe

I'm not really a fan of people using automated tools to change valid tagging they personally disapprove of. Correct typos, sure. Change deprecated tags, maybe. "I don't like tagging it that way, even though it's valid"? No, no, a thousand times no.

"Blue plaque" is perfect.

1) There is nothing in the wiki page for blue plaque deprecating the tag. It is a perfectly valid tag which I chose with all due deliberation.

2) It IS a blue plaque in EVERY sense. It is a plaque. It is blue. It meets the criteria in the wikipedia article on blue plaques.

3) It is referred to, by the society that placed it and by local media as a "traditional cast-iron blue plaque." https://www.tivysideadvertiser.co.uk/news/19350124.plaque-erected-site-cardigans-market-cross/

I have six other blue plaques to place in Cardigan, when I receive location info. I will be tagging them as blue plaques and reverting this one.

As far as I could determine, Cwmdegwel never was an alternate name for this road. I messed up by adding it as an alternate. Fixed now.

Ah, that bus stop. It used to be a marked bus stop. I vaguely remember a shelter there, many years ago. It's not there any more, not even road markings. But the bus does usually stop on the opposite side of the road. I'll fix things.

To see how all the segments fit together, http://umap.openstreetmap.fr/en/map/408x_416444#14/52.0859/-4.6712 If you're not familiar with uMap, it will probably give some error messages when it makes repeated overpass queries to get the segments. Zooming in and out may or may not get missing segments to appear. Then click on the eyeballs at bottom-left to turn off all the segments, then turn segments on one at a time to make sense of the route.

I'm lost. The relation you link to is the full 408 route with many stops and is a circular with no ends.