写一篇英语作文,Advertisements on the Internet

Internet has become an imprtant part of our life,study and work, and more and more people are using it. There are many advertisements on the Internet about almost everything you can imagin.
why there are so many advertisements on the internet? firstly, there are many people surfing the internet every day. people will see the advertisements easily. secondly, it is very cheap to do advertisements on the internet, at least much cheaper than on the TV.
The influence of advertisements on the internet is great, they can make people want to buy things.However, some advertisements may be misleading even fake,which may cause damage to the buyers.so we should be carefull when we buy things onthe Internet.