Search engine results page - though people often mean their rankings on a particular serp. http://www.webopedia.com/TERM/S/SERP.html
i have heard lot of saying that x number of pages from his site has been indexed.. how do they come to know??
The site command. site:www.mysite.com, I believe. Check out the Google special search features. Herre is a link with a little info http://www.google.com/help/features.html#link. This is not the page for which I was looking but has some useful information.. Shannon
Use the Keyword Tracker to see how many pages are indexed using the api (usually significantly lower than the site: command).