SEO - Google's Supplemental Index

Google have a main index and a supplemental index. Pages on the supplemental index are penalised in search results so you want to stay out of that!

http://tropicalseo.com/2007/how-to-escape-googles-supplemental-index/

Have trusted links to your site from high quality big sites.

A unique meta description and unique title for every page.

Link within your site not just to home page (avoid hollow site).

Each page should have a significant percentage of unique content.

Don't link to low quality sites from your site as this will result in less pages indexed (Google penalising link sharing programs).

You can have some sub pages of your site in the supplemental with your home page and your main pages in main index, so you want to get as many pages as possible to stay in the main index.

SMM - Social Media Marketing - is using community sites like Digg, Delicious, Stumbleupon, Netscape, Reddit, Yahoo My Web, Fark.com etc. in order to generate links to your site to help your Google ranking. You should always provide a link to Digg your article and a Delicious link to bookmark it, to make it easier for users to increase your articles popularity on these sites - having a few friends click on these will get the ball rolling.

Whilst in the first 48 hours your traffic will increase and you will get more eyeballs, this is not the main purpose, you want people to backlink to your page from their sites and blogs. It can also be called "link baiting" and can be unpopular with users of these social sites if the content linked to is not seen to be valuable enough. So content is still king, you need good content, but you also need to market it effectively so people will see it.

A good article on Tropical SEO explains it:
http://tropicalseo.com/category/link-baiting/
also check out:
http://tropicalseo.com/2007/how-to-escape-googles-supplemental-index

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