I am sorry, I wasn't clear on my question. If we don't register domain names, what URL would I promote to drive traffic to my capture page? I also want to do a campain in Adwords & Adsence. So I will need to put a URL for both my landing page, as well as my capture page in an add.

If you want to promote your capture pagei without using the social bookmarking and networking weblets, you will need to go to the capture or landing pagei you would like to promote, and copy the URL from the url bar of your browser (it will look something like http://mlmv2.com/name-of-page.....)