I was watching the NBA finals game tonight and noticed the text "fiserv.forum" on the court, so I went typed that into a browser. The site is owned by some software developer named Diego advertising his services, but https://en.wikipedia.org/wiki/Fiserv_Forum claims that it's just the stylized version of the name of the arena in Milwaukee.
I guess they didn't think .forum was a valid TLD? Anyways, kudos Diego.