Over many years I didn't discover one of the most important sides in the internet , it's what we call it Social Bookmarking sites , as a webmaster or just a normal user you will kindly like it , When I’m talking about a normal internet user is the user got don’t get any profits of using this service just want to share what he likes or to be famous on the website. There is a good side in this websites for the webmasters ! yes , in reality I’ve been using one of this sites and got more the 30K unique visitor in 24H , it’s right that this visitors won’t visit you everyday but at least they are came and knew your site , if you got a good site content with a good design why they don’t add you to them favorite ? Being popular on this sites give you the change to increase your PR (Page Rank ) because when your page or homepage get popular I will be shown in the homepage of the Social Bookmarking website which most of them got PR8 and give you a direct link without “ Nofollow ” , As  I’ve discovered there is many website share your link when your website get popular in their sites and this give you a good amount of visitors . I’ll mention some of the best social bookmarking websites .

Digg

Delicious

StumbleUpon

Reddit

Finally , I hope the best you and this article is not give you a good idea for spamming , No just to let you know how it’s important to join and share your awesome pages everywhere .