SYBSEARCH

I want my site to be advertised in online classifieds. Some SEO companies say they will put me in at least 50,000 places. Is this for real? How can I check to see if they did this?

How much does site maturity impact SEO? Should I make an “under construction” page and register my site with search engines before it’s up and running for SEO purposes?

I doing SEO for a large site (20+ pages). What are the best practices in regards to the sub-pages of the site? Should I put keywords for sub-pages, and if yes how similar can they be to my home page keywords? What about description and page title, how long should those be and how similar to the home page? Is there anything else that can be done for SEO optimization?