Adding over a million new pages when we re-launch our website

[manojitg]

We are re-launching our website and adding lots of new content, in fact there would be 3-4 new sections which would all add up to over a million pages of very useful content for the visitors. We are apprehensive as to how Google treats this if it happens very quickly (2-3 days). Is it treated as spam and thereby attract Google penalties?

Also, we would submit a new Site-map to google to let it know that we have made changes to our site..does that help?

I have browsed through Google search results and G-Webmaster tools but couldn't find any answer to this. Even this section has "Removing content" as one of the sections in the D/Down but nothing on 'adding content'.

Any help on the above concern would be greatly appreciated..

[edited by: Robert_Charlton at 5:36 pm (utc) on Sep 21, 2010]
[edit reason] fixed formatting [/edit]

[tedster]

Helle manojitg, and welcome to the forums.

First, I do think over a million new pages at one time is risky - there are just too many things I can see going wrong. So if there's any way you can do this in stages I think you'll be better off.

Even if you have a PR9 home page, it would take Google a good while to index that many new urls. And how much of your site gets crawled and indexed is strongly dependent on PageRank (backlink strength).

Another big deal will be whether your server configuration has done a good job of eliminating canonical URL problems. With a big pile of new content, you don't want to complicate things with canonical issues.

On more point - whether it's seen as spammy or not will have a lot to do with whether these new pages have unique content or are re-publishing content that can be found elsewhere on the web.