I am working on a project that's a network of 2 domains (domain.gr & domain.com.cy) of subdomains similar to Hubpages [each user gets a profile under a different subdomain & there is a personal blog for that user as well] and I think there is something wrong with our sitemap submission. Sometimes it takes weeks in order a new profiles to get indexed. We make use of one Webmasters account in order to manage all network and we don't want to create different accounts for each subdomain since there are more than 1000 already.

According to this post http://goo.gl/KjMCjN, I end up on a structure of 5 sitemaps with the following structure :

• 1st sitemap will be for indexing the others.
• 2nd sitemap for all users profile under the domain.gr
• 3nd sitemap for all users profile under the domain.com.cy
• 4th sitemap for all posts under the *.domain.gr - news sitemap http://goo.gl/8A8S9f
• 5th sitemap for all posts under the *.domain.com.cy - news sitemap again

Now my questions:

1. Should we create news sitemaps or just list all post in 2nd & 3rd sitemap?

2. Does links ordering has anything to do? Eg: Most recent user created be first in sitemap or doesn't make any different and we just need to make sure that lastmod date is correct?

3. Does anyone guess how Hubpages submit their sitemap in Webmasters so maybe we could follow there way?

4. Any alternative or better way to index this kind of schema?

PS: Our network is multi language - Greek & English are available. We make use of hreflang tags on the head of each page to separate country target of each version.