What role does supporting material from the Internet play in a speech?  

Respond to the following questions, and if it’s relevant, include your own personal experience:
Using the Internet to research and obtain supporting materials such as graphs, charts, statistics, quotes, and so on, you have literally millions of resources available. Write two or three sentences that describe what you need to consider when evaluating material from the Internet.
What role does supporting material from the Internet play in a speech?