Why do you use Facebook?

I'm currently using facebook to post different topics, ideas and also to witness on the topic of Christianity. I am required to use this site as a way to learn different techniques for writing. But facebook and be used for so much more. It's a great search engine for relocating friends and family or to find out information about anything from movies to cars. But on the controversal side facebook can serve as tool for bulling, or unwanting advances. I have been able to use facbook to notify my family of gatherings, and keep up with new business ventures. It's useful in many ways but like anything else facebook has it's pros and cons.