\setupinteraction[state=start]

% Define \Site[id][url]{description} to put in a clickable link
% with footnoted URL
\def\Site[#1][#2]#3{\useURL[#1][#2][][#3]\from[#1]\footnote[#1]{\tt\hyphenatedurl{#2}}}

\setupbibtex[database=bib]
\starttext
Everybody should read the \MetaFun\ manual \cite{hh2010}. Buy it at \Site[h2obooks][http://www.h2o-books.com/]{H₂O Books}.

I like \Site[context][http://www.contextgarden.net]{\ConTeXt}. This sentence has a footnote.\footnote{This is a footnote.}

\completepublications[criterium=all]
\stoptext