How do web search engines handle view pages?
In the SEO world, this is known as Duplicate Content, and it's something you want to avoid as much as possible. [1]

This is dangerous territory for duplicate pages which can get you sandboxed by the search engines! [2]

in drupal you can reach same page with lots of links: node/123, node/123/, content/some title and ...

one solution is Global Redirect module