PORTAL
definition : A Web site that offers a variety of Internet services from a single, convenient location
example : kmnsportal

BLOG
definition : An informal Web site consisting of time-stamped articles, or posts, in a diary or journal format, usually listed in reverse chronological order.
example : twitter

WIKI
definition : A collaborative Web site that allows users to create, add to, modify, or delete the Web site content via their Web browser.
example : wikiHow

ONLINE SOCIAL NETWORK
definition : A Web site that encourages members in its online community to share their interests, ideas, stories, photos, music, and videos with other registered users.
example : facebook

BUSINESS/MARKETING
definition : Web site contains content that promotes or sell products or services.
example : pearl haya gallery