When you first install Jenkins a relatively funny message awaits you:
"Welcome to Jenkins! Please <a href="newJob">create new jobs</a> to get started."
The link is b0rked, and it's somewhat embarrassing since it's been like that since I can remember it (2 years ago).
I think the link should be:
I mean, I don't mind it, you only see it on a new Jenkins without jobs. But for a new user, seeing HTML on the homepage of a web app is kind of... funky