StackOverflow and Google search
this is a question purely for learning purpose.
I have noticed that this site has an incredible power of appearing in search engines.
Questions as new as 2 days old appear on search results.
Can someone please advise me or point me towards resources on how to make a website this versatile towards SEO?
I did a brief search and came up with these:
1) Submit xml site map to search engines - this is really going to be a log, as there are tonnes of questions generated every day. If this is infact the way to go, how often should I submit the sitemap and where?
2) have each page contain it's own unique title and meta tags (desc, keywords) - How will I know what goes into each page to make key words out of it?
The main thing that escapes my brain is, how would each question (the title is different, so as far as the search engine is concerned, it's a new page) - how would I tell the engines that I have a new page?