Meta tags & paid inclusion
		• An early cautionary note: Web sites can put unseen HTML tags in their pages to help guide or attract search engine spiders. It’s called stacking. • Tags can be abused. For example, some pornography sites put meta tags for “travel” or “Congress” in pages to attract hits. • Some search engines also accept payments from companies so that company web sites show up on certain searches, such as for travel or mortgages.