Working thesis and sentence outline?

(not sure if this is done right...)

thesis: The individuals using social networking sites have the responsibility to know the risks of posting information online, realize there can be severe consequences for exposing private files and protect themselves from getting into harmful situations through online friends. Many would argue that it is someone's personal choice whether or not they pay attention to the problems associated with social networking sites, because it is up to them to make the judgement if they are posting something they would be willing to show a boss. If people choose to stay close minded and neglect the fact that dressing in racy clothing or promoting drugs or alcohol can risk their whole career beyond one job. The goal is to help people acknowledge their mistakes before their lives get completely ruined.

sentence outline:

Intro- (thesis listed above)

Support 1- know the risks of posting information online

police, employment, family, complete strangers may be able to see information and forward it to others. Also, people you would consider acquaintances can be able to access things threw a news feed like, "vacation", "out for the weekend" or another message that is exposing personal information.

Support 2- severe consequences of exposing private files. whether it is pictures, documents, videos or links, once posted on a social networking website, it is guaranteed that someone will see it. one has to keep in mind that an album containing images from a wild night in vegas wont be as entertaining to a boss or head of the company. Also, it could potentially ruin a reputation if you are the executive or owner of an establishment. Teenagers are also susceptible to posting images that could prevent them from getting into a college or even graduating high school.

Support 3- protecting themselves from getting into harmful situations with online friends. Not only do cops pose as teenagers or young adults, so do pedophiles, other kids and even parents. It is never safe to expose information about your whereabouts or even a phone number. Information travels fast through the internet and you could post something as harmful as "going to the mall with so and so at a certain time" and it might seem shocking, but someone could easily be waiting for you there.

Support 4- there are many high powered people who have had to learn from their mistakes of getting involved with sites like Facebook that destroyed their careers. The urgency to post everything that happens ones life, and the constant need to document events through pictures and video are really starting to take a turn for the worst. having an account on one of these websites is a reflection of who you are representing. The smallest things can change the worlds opinion of you.

Conclusion- Nothing is kept a secret anymore and most people are oblivious to this fact. Although social networking sites have helped expose crimes, gang activity, and potential abuse victims, it is also exposing phone numbers, explicit images and inappropriate conversations between young adults. entering the work force and leaving behind high school, people need clean up their acts and realize once you click "send", "enter", "accept" their is no turning back.

^ I think I need to narrow down my topic to an age group

Suggestions would be great!