If you're a longtime user of Google properties, it's not unusual to come across abandoned and neglected properties. Weed infested, broken glass, 404 errors - the works. Google's Detroit.
Today's example comes from the once proud edifice of Google Custom Search. I use several custom search engines, some for work and some for personal use - including healthcare analytics, special needs, medicine, and my stuff. Custom Search Engines come from the glory days of Google, before G+ and the end of Data Liberation.
The standard custom search page references Google homepage and 'add this search engine ...'
The latter page has a link that sometimes does nothing, sometimes produces a 404 error.
Hard times in Google town.
If you want to visit more Google decay, check out the custom gadgets directory. There are some scary properties in there...