google recmond onec, if you want quick indexing better do some backlinking or post comments with some good blogs
does this mean if i add pages to my site i dont need to resubmit a sitemap as long as i ping the new page?
Submit your website to Google once.. but when you update or modified your site then you should resubmit site map again.
just submit it ones there is no need to submit it again and again cause google spiders is smart enough to get your website update for the next..
I only submit my Sitemap once to Google. I think there is no point in doing it more often. If you have just some backlinks, not only to the root of your domain, Google will catch up on new pages quiet fast.
Only do it once. If you have a look on your cpanel latest visitors you'll see that the spiders etc come visiting almost every day. You'll be indexed fine.