A function is what the web site was designed to do. A web site can have many functions, here are a few of them.

• Give out information
• Attract new customers
• Advertising
• Display videos
• Play Games
• Social Networking
• On-line retail
  • Consumer advantages
    • More choice of goods on-line
    • Cheaper prices
    • Home delivery
  • Consumer disadvantages
    • Often long delivery times
    • Temptation to spend more
    • Social Isolation
  • On-line retailer – advantages
    • Can reach a far wide audience
    • Don’t need expensive showrooms
    • Don’t need to employ trained sales staff
  • On-line Retailer – disadvantages
    • Must spend money on a web site with secure payment system.
    • Must accept of high rate of returns.
    • Never meets customers.

Here is Yahoo!’s top 10 functions of a website.