I'm working on a fairly large site, that generates a dynamic sitemap hourly. Now in Google Webmaster Tools the sitemap isn't submitted yet and I'm shying away because I'm afraid that the new content (which appears in the dynamic sitemap) won't get crawled as quickly. So my question is: How often do the GWT check the sitemap once submitted?
Any other thing I should be aware of when working with GWT and dynamic pages?
P.S. I checked this thread How often are sitemap.xml checked for updates by crawlers? and from what I understand Google crawls more often when the site gets updated regularly - but does the same apply for the GWT?