Wow! Everyone has been busy!

In regards to the internal linking of keywords in content to other pages within the website - don't over do it. I'd say once every 400-500 words would be fine. Too much and it may look like spam. Try and have lotttttts of pages of content when you do this.

In regards to Guard Dogs comments about
"2. First and last text links (i.e., if you are writing about 'Online Casinos' as a topic, the first thing the SE should see is 'Online Casinos' and the last thing it should see is 'Online Casinos'."

Another option is to have a "similar content' list in a web2.0 style layout at the bottom of the site.

I see I will have to start a new thread soon too with internal site linking, and linking from external sites!