natbib: comma after website name

Question

Consider the MWE below. The resulting bibliography displays an annoying comma after the website name. Is there any way to fix it (but keep the unsrtnat style for all other types like articles)?

\documentclass{scrartcl}
\usepackage{filecontents}
\usepackage[square,numbers]{natbib}
\bibliographystyle{unsrtnat}
\usepackage[english]{babel}
\usepackage{url}
\begin{filecontents}{\jobname.bib}
@Other{some-web,
  Title                    = {A Website},
  url = {https://en.wikipedia.org/wiki/Main_Page},
 Note                     = {Last visited: 15.03.2014},
}
@Other{some-web2,
  Title                    = {Another Website},
  url = {https://en.wikipedia.org/wiki/Main_Page},
 Note                     = {Last visited: 15.03.2014},
}
\end{filecontents}

\begin{document}
\section{first section}
some content \cite{some-web,some-web2}
\newpage
\section{Bibliography}
\bibliography{\jobname}
\end{document}

Answer 1

The comma is before the year. (When you run bibtex on that file you get warnings about "empty year".)

The documentation for natbib seems to indicate (in "2.7 Authorless and Yearless References") that that should just be omitted then, but it seems like it doesn't work in all styles.

I would use Biblatex which handles missing fields very well (run biber instead of bibtex):

\documentclass{scrartcl}
\usepackage{filecontents}
\usepackage[style=numeric-comp]{biblatex}
\addbibresource{\jobname.bib}
\usepackage[english]{babel}
\usepackage{url}
\begin{filecontents}{\jobname.bib}
@online{some-web,
  Title                    = {A Website},
  url = {https://en.wikipedia.org/wiki/Main_Page},
  urldate                     = {2014-03-15},
}
@online{some-web2,
  Title                    = {Another Website},
  url = {https://en.wikipedia.org/wiki/Main_Page},
  urldate                     = {2014-03-15},
}
\end{filecontents}

\begin{document}
\section{first section}
some content \cite{some-web,some-web2}
\newpage
\printbibliography[title=Bibliography]
\end{document}