Bigbad, was the email in your junk or spam folder? Sometimes when emails end up in there, your email provider might disable the links so they can't be clicked on. If you move the email to your inbox the links should be clickable.
Chinajan - The "subscribe to newsletter" tickbox in your profile is where you can opt out of receiving communications from us. Because the email about Gardenlines is something a little different and just something we wanted to let you know about, we sent you an email first asking if you would like to receive information about Gardenlines. We don't intend to spam you with random junk - this is a sister company that we just wanted to let you know about. That first email is designed to let you know and give you the chance to opt out, and if you have opted out we won't be contacting you again.