In your profile you do get one link to your website, facebook and twitter pages.
Plus you can also include live links into the pins.
This article “http://blog.hubspot.com/blog/tabid/6307/bid/31608/Why-Social-Networks-Like-Pinterest-Will-Never-Be-Marketing-Free.aspx” talks about the marketing on pinterest. But the most valuable thing is a free ebook on the basics of marketing with this new “hot spot”. It helped me to understand the site much better than just browsing around.
My first foray into this area is a simple ‘like’ under my category
” Casinos I Want To Visit“
(aren’t a I inventive)
The most revealing things were that you can include hastags and VIDEOS (youtube) !
They also suggest signing up with your twitter user name.