Do unindexed pages affect SEO?

[Kal-SEO]

Been looking at a couple of sites recently. I've seen that they contain a couple of 'default' pages from the build process. These pages aren't of any significance to the main site and as such aren't actually linked in anywhere.
I did a site:www.example.com search on google and as expected the pages aren't indexed.

Could these page be have a negative affect on SEO in the future?
Even though they aren't indexed or linked in anywhere.

I look forward to you responses...

[Kal-SEO]

Thanks for you thoughts.
I may not have been clear enough, the pages don't have no index on them they are simply not found in the the google index when performing a site: search

[Kara.Wallace]

It shouldn't. As xoffie says, if they are noindex and not linked to, then Google really doesn't care about them.

If they were linked to I still don't think that they would affect you negatively, you just wouldn't rank well for them - unless it was automatically generated duplicate content. If they were just blank pages or some system generated page that was "unique", my guess would be the search engines would just ignore them as not being overly valuable.

Just my opinion.

Mike

[xoffie]

I really wouldn't think so, if the pages are noindex and not linked from anywhere I imagine the answer is no but am as interested as you to hear a more indepth answer!