" What do thinks I about advertising?

Today with many advertisements around our life. Some people like it and some people do not, but let me tell you my thoughts.
We must admit that advertising has some positives. It helps modern business to develop. Without advertisements, businessmen cannot introduce their products to customers. For example, if I want to buy a mop, I could watch the TV advertisements to know which one is easiest to use and suit me best.
Although advertisements do have some negatives. The worst side is it could mislead customers. Most advertisements only show the advantages and hides the disadvantages. Once I found a vacuum cleaner that was a great choice for cleaning my house. The advertisement said that the vacuum cleaner is lightweight and easy operating. It had a beautiful appearance and I like it very much. After I bought it, I found that it has a deadly disadvantage,  because it has a long electric wire. Whenever I am cleaning, the electric wire wraps around me all the way. This disadvantage made me annoyed, and I never knew of the disadvantage before I bought it, the advertisement hid it.
By these two examplea, I feel that false advertising is not good for improving our lifestyle. I do not like it."

What do I think about advertising?

Today there is so much advertising in our lives. Some people like it and some people do not. I will talk about my opinion [on the subject].
We must admit that advertising has some positives. It helps modern business to develop. Without advertising businessmen cannot introduce their products to customers. For example, if I want to buy a mop, I could watch TV advertisements to know which one is easy to use and would suit me best.
Although advertisements have some negatives, the worst part is that it could mislead customers. Most advertisements only show advantages and hide disadvantages. Once I found a vacuum cleaner [I thought was a] great choice for cleaning my house. The advertisement said that the vacuum cleaner was lightweight and easy to operate. It has a beautiful appearance and I like it very much. [But] After I bought it I found it has a deadly disadvantage; that it has a long electric wire. Whenever I do some cleaning, the electric wire winds all the way around me. I am annoyed by this disadvantage, and I never knew the disadvantage before I bought it. Advertising hid it.
By these two examples, I feel false advertising is not good for improving our lifestyle. I do not like it.

[Notes:

Advertising - (verb) ; Advertisement (noun)

You use the word 'disadvantage' a lot - maybe the words 'inconvenience' and 'hazard' would fit better in some of these situations?

You seem to have a pretty good grip of the language - the message came across clearly most of the time! What seems to need improvement most is tenses - past and present, switching between the two. 

Thank you for posting!]