You could use the glossaries package. It serves not only to make glossaries and acronyms, but also to make lists of things
The following should be put in the preamble after the hyperref package (if it is called, and I think you do call it)
\usepackage{hyperref} % Optional
...
\usepackage[toc]{glossaries} % toc option puts an entry in the table of contents
\newglossary{links}{sym}{sbl}{Netography}
\makeglossaries
\loadglsentries{listofurls}
\begin{document}
...
The following should be put where you want the netography to appear
\glsaddall[types={links}] % This adds all of the defined acronyms without needing to call them in the body of the document
\printglossary[style=super,type=links,nonumberlist] % Prints the acronyms
Then, you create a file (named listofurls in this case) that contains the declarations as follows:
\newglossaryentry{url1}
{
type=links,
name={2012/10/10},
sort=20121010, % Use what ever form you want to sort your list
description={\url{www.google.com}}
}
\newglossaryentry{url2}
{
type=links,
name={2012/05/06},
sort=20120506, % Use what ever form you want to sort your list
description={\url{http://tex.stackexchange.com}}
}
Run pdflatex jobname then makeglossaries jobname then pdflatex jobname
MWE:
\documentclass{article}
\usepackage{hyperref} % Optional
\usepackage[toc]{glossaries} % toc option puts an entry in the table of contents
\newglossary{links}{sym}{sbl}{Netography}
\makeglossaries
%\loadglsentries{listofurls}
\newglossaryentry{url1}
{
type=links,
name={2012/10/10},
sort=20121010, % Use what ever form you want to sort your list
description={\url{www.google.com}}
}
\newglossaryentry{url2}
{
type=links,
name={2012/05/06},
sort=20120506, % Use what ever form you want to sort your list
description={\url{http://tex.stackexchange.com}}
}
\begin{document}
\glsaddall[types={links}] % This adds all of the defined acronyms without needing to call them in the body of the document
\printglossary[style=super,type=links,nonumberlist]
\end{document}
Output

Update 1
Oliver asks if you can reference the links in the body. Actually, there is a problem that I don't know how to handle with the \urlcommand, here is a MWE:
\documentclass{article}
\usepackage{hyperref} % Optional
\usepackage[toc]{glossaries} % toc option puts an entry in the table of contents
\newglossary{links}{sym}{sbl}{Netography}
\makeglossaries
%\loadglsentries{listofurls}
\newglossaryentry{url1}
{
type=links,
name={2012/10/10},
sort=20121010, % Use what ever form you want to sort your list
description={\url{www.google.com}}
}
\newglossaryentry{url2}
{
type=links,
name={2012/05/06},
sort=20120506, % Use what ever form you want to sort your list
description={\url{http://tex.stackexchange.com}}
}
\begin{document}
For more information visit \glsdesc{url1}\footnote{This site was last visited in \gls{url1}} Notice that there is a problem with the url command...
Workaround \glslink{url1}{\url{www.google.com}}
\glsaddall[types={links}] % This adds all of the defined acronyms without needing to call them in the body of the document
\printglossary[style=super,type=links,nonumberlist]
\end{document}
Output:
