Go search on \url{http://google.com}!

Write me to \href{mailto:mail@cebe.cc}{mail@cebe.cc}!

Brackets in url and backslashes in links:

About port info on wiki: port\footnote{\url{http://en.wikipedia.org/wiki/Port\_(computer\_networking)}}

About port info on wiki: port\footnote{port wiki: \url{http://en.wikipedia.org/wiki/Port\_(computer\_networking)}}

I'm an inline-style link\footnote{\url{https://www.google.com}}

I'm an inline-style link with title\footnote{Google's Homepage: \url{https://www.google.com}}
and another one in the same paragraph:
I'm an inline-style link with title\footnote{Google's Homepage: \url{https://www.google.com}}