%url package
\usepackage{url}
%code that makes URL font the same
\newcommand{\urlwofont}[1]
{
\urlstyle{same}\url{#1}
}
\begin{figure}[htbp]
\centering
\includegraphics[width=8cm, scale=0.55]{../Figures/~}
\caption{\small ~).
\protect\urlwofont{http://www.google.com/~}}
\label{~}
\end{figure}
I am using this sequence when stating reference URL for figures.
However, how can I make this URL bold?? I tried to use {\bf}, but I don`t know where to put it or how to use it. Can anybody give advice for this?

{}icon, and used backticks to highlight your{\bf}. I also removed the thanks- it may sound strange, but the best way to thank folks is to 'upvote' (and hopefully, accept) their answers :) – cmhughes Mar 9 '12 at 22:36