My team will go online with a portal that will have over 1.000.000 products. And I read [here] [1] following text:

> Prioritize which content you have indexed. With that much data, not
> all of it is going to be absolutely vital. Make a strategic decision
> as to what content is most important, e.g., it will be most popular,
> it has the best chance at ROI, it will be the most useful, etc. and
> make sure that that content is indexed first.

Another SEO expert told me to pick out our top 50 categories (including all products) and to put them into our XML Sitemap for Google.

Our site map for users gives already deeplinks into those categories and manufacturers too.

And if we put our top 50 categories into our XML Sitmap, should we:

a) just increase the number of categories as soon as google got almost everything crawled?
b) just take out categories that do not work and put in others that work better? So that Google Bot is focused on our top 50 categories (with approx 250.000 Products)

As far as I know Google indexes everything, as long as there's no `no-index` set - but a XML Sitemap will help Google to find our important pages faster - is this correct?

  [1]: http://webmasters.stackexchange.com/questions/5300/how-to-get-tens-of-millions-of-pages-indexed-by-google-bot