No. I concede that wiki rot is a problem, but just because no one has used a page for a year and all those involved have left the company doesn't mean the info

No. I concede that wiki rot is a problem, but just because no one has used a page for a year and all those involved have left the company doesn't mean the info isn't important. Better solution: stop using big branded, overly clever and difficult to use wiki software. Have a single wiki, not split artificially by project, that can be searched as a single entity.