The advantages are a fast and convenient. The disadvantage is that data may not facts. Because there are a lot of Internet usage, and can change the information on the Internet.
The advantage is fast, convenient and disadvantages. The information may not reflect the facts. Because many Internet users there. And can change data on the Internet.
The advantages are convenient and fast disadvantages data appear may not facts. Because Internet users is large. And can change the information on the Internet.