[cabaalis]

This is my bet, they are trying to namespace their site. They may not have EULA rule they can cite, so hand-wave security and confidentiality.

[bpicolo]

They don't need a specific EULA for this. They can terminate your account at any time, for any reason [0]. The downside of them giving easy, memorable /paths is that you're subject to this sort of thing on occasion.

Yelp has something even more uncomfortable to maintain - custom subdomains [1]

[0] https://help.github.com/articles/github-terms-of-service/#m-...

[1] https://food.yelp.com/

[cabaalis]

And they would likely do so if he continues to refuse. I'm not saying they're doing anything wrong other than not give a reason.

[jperras]

Oh, not a bad hypothesis! I hadn't thought about that.