Need help with body paragraph topics

My subject is impact of computers on interpersonal communication
here is a rough draft of my outline I think the body topics are not focusing on my subject am I wrong?

Intro-Discuuss how technology has changed and how many households have computers in them. Then i would also have to name the body paragraph topics which some i came up with but I am not sure can I use them
1. Email/Instant Messging at school/jobs

2. Companies using Blogs [saw an article in newsweek bout this]

3. Computers replacing employees for example some stores have them at checkout stands

4. Rising stores/companies on the internet before they open stores

5. People dating and meeting people on the net