You're going to send an email to your friend telling them about:

Sign FX Online Decal Store (http://www.sign-fx.com.au/catalog)

Your email will read as the following:
Hi <Your friend's name>,
I found a good online shop that you maybe interest in.
Website : Sign FX Online Decal Store
http://www.sign-fx.com.au/catalog
I found this website at http://www.shophere.biz
Sincerely,
<Your name>
<Your email address>