for e.g. if you want to tell someone about a website lets take a simple website for e.g..
www.google.com

So instead of giving that URL you go to linkbucks and create a link there with the destination as www.google.com
it will give a link such as linkbucks.com/8247hdf128389
instead give this to someone you want to tell about google.com When they click they will see a small ad on the way which generates you money.
The current payment rate is $2 / 1000 views however it varies though.