bluelook, I think a new (but static) page shouldn't be a problem. If we don't have it, we try to fetch the page once to get the content and target to it. Fetching the pages to show an ad on it shouldn't affect your pages indexed in any way, but once we have the page, we should be golden. The only problem would be for pages that are hard-to-crawl because of session IDs, for example. But for the example of a news site, if you just put up a new static page, we should be able to target on it pretty quickly.