last night, I write a sitemap page by php, which can generate all products and pages of my website. sitemap here: http://www.grand-scape.com/sitemap.xml I use google's webmaster tools to submit my sitemap, and the result status is totally ok. but when I search the google result of my website pages, I find that the result is still the old ones by now. result here: http://www.google.com/search?hl=en&source=hp&q=site%3Agrand-scape.com&aq=f&aqi=&aql=&oq=&gs_rfai= so my question is when google will refresh the cache of the results? what I can do? Is my sitemap not good enough? thanks in advance.
I find that some forum's posts appear in the google results very soon. Is it just because this forum's pagerank is high? or other reason? By the way, is the sitemap's <lastmod> element useful?