Patent infringement claims in 2019 saw Mozilla reach a settlement to avoid litigation. As part of that settlement it was forced to make changes to MLS that impacted its ability to invest in (commercially exploit?) and improve the service.
Yet another nice thing ruined by IP trolls. It’s long past time we threw software patents into the dustbin of history where they belong.
Posting something on a website does not make it public domain. Typically, the website’s Terms of Service will require that you grant the website operator a license to use any content that you post on the site (so that they can display it to other users). That license does not extend to other visitors of the same website.
Of course, in practice, it’s very unlikely that someone would take you to court over copying a website comment. But if someone posts, say, an original work of art or a short story in a comment thread, you should be aware that it is still protected by copyright.
“Title II” in this context refers to Subchapter II of 47 U.S.C. Chapter 5. 47 U.S.C. is the Communications Act of 1934, the act of Congress that established the FCC, and Chapter 5 is the part that deals with “Wire and Radio Communications.”
If you want to know what this law empowers the FCC to do, you can read the statute yourself. Or, if that’s too difficult, you can also use your access to the internet to look up more accessible sources, such as Wikipedia’s “Common carrier” article.