When you want to promote a new website, the best choice is to pay service fees to a Web design Company which deal all day long with this kind of work.
However sometimes (or often ;-) you want to promote it by yourself and for free. The result is definitely not the same, BUT we found one of the best Web2.0 application to help you promote your website by the Css Galleries method.
It's called CssSubmiter.
This web-tool is a Css galleries submission service. CssSubmiter.com is the best way to send your website to hundreds of Css Galleries (kind of website portfolio). Just fill one form and this web-application will Pre-fill for you all other submit forms.
To increase the chance to get listed, just make a beautiful Web design for your website and to code it with CSS (Cascading Style Sheets).
With this part of Website Promotion, you will get feedback on any design. This is one natural way to promote your business.