Know the Laws:
UPDATED June 7, 2013
The only way to be sure that you will not reveal personal or confidential information about yourself on social media sites is to not use social media. However, if you do maintain an online presence, there are some things you can do to try to control who sees your information. Please consider the risks before creating a profile on a social media website.
If you have a Facebook profile and you do not want someone who is abusing or harassing you to be able to see your profile, there are a few ways to try to accomplish this: "unfriending" someone, blocking and/or reporting the person, or limiting what that person can view on your profile.
First, if you are already "Facebook friends" with the person, you can "unfriend" the person. If you “unfriend” the person, Facebook does not send a notification of this action to the person but if s/he checks your profile, s/he will probably realize you two are not "friends" anymore since s/he will only see the basics of your profile (i.e., just your photo, your city, etc.). To “unfriend” someone, hover the cursor over the person's name if s/he has posted on your page, then click on the word "Friends" that appears - from there, scroll down to click "unfriend." If the person's name does not appear on your page, you can search for the person and hover the cursor over the word "Friends" that appears at the top of the screen on that person's Facebook profile - from there, scroll down to click "unfriend."
To "block" someone means that s/he cannot see any of your activity on Facebook, including your profile or things you write on other people’s walls. To “block” someone, hover the cursor over the person's name if s/he has posted on your page, then click on the word "Friends" that appears - from there, scroll down to click "report/block." Then the option to "block" the person will appear. If the person's name does not appear on your page, you can search for the person and hover the cursor over the word "Friends" that appears at the top of the screen on that person's Facebook profile - from there, scroll down to click "report/block" and the same options will appear.
However, if you believe it would be unsafe for you if the abuser knows that you blocked or unfriended him/her, you may instead choose to keep the person as a "friend" but limit the amount of information s/he can see on your profile. You can hover the cursor over the person's name in the same way indicated in the above paragraphs, then click on "Friends" and then scroll down and click on "Settings." From there, you can indicate what information would be shown to this person, which can allow you to keep certain information private possibly without the person realizing that you are limiting his/her access to your profile.
To limit who can find you through Facebook searches, you may set search settings to “Friends” instead of the default “Friends of Friends.” You can change the search settings by selecting the gear icon at the top right hand corner of your Facebook page. In the drop-down menu, select “Privacy Settings,” which should take you directly to the privacy settings page. On the privacy settings page called “Privacy Settings and Tools,” go to the section called “Who can look me up?” Use the “Edit” button at the far right to change it to “Friends.” This way, even if the person you wish to block is still “friends” with some of your friends, your online profile will not be searchable by the person so s/he cannot find you after you have unfriended him/her.
Note: This information is current as of June 2013. Due to the continuous changes in Facebook privacy settings, the specifics of these functions are frequently changing. If you want to learn more about how to do the actions described above, you can go to the Family Safety Center.
To limit who can find you through search engines such as Google, select the gear icon at the top right-hand corner of your Facebook page. In the drop-down menu, select “Privacy Settings,” which should take you directly to the privacy settings page. On the privacy settings page called “Privacy Settings and Tools,” go to the section called “Do you want other search engines to link to your timeline?” To make it so that your Facebook profile will not be found if someone uses a search engine, you should confirm that this function is “Off.” If it is not off, select the “Edit” button at the far right to turn it off.
Maybe. Depending on your state’s criminal laws and what type of harassing or threatening messages are sent to you or written about you, you may be able to report it to the police and the person may be arrested. To do so, it may be necessary to save and/or print out the harassing comments so that they are preserved for any possible future prosecution. For the legal definition of stalking and harassment in your state, go to the Crimes page in your state.
Depending on your state, harassment or stalking might also qualify you for a restraining order. Go to our Restraining Orders page and click on your state in the drop-down menu to find out. Printing out the harassing comments can also be useful in a restraining order hearing too.
To get specific advice on whether or not your situation might qualify you for a restraining order or qualify as stalking or harassment in your state, you can go to the Finding a Lawyer page in your state.
Facebook answers this question in detail on their Help Center section. In sum, to permanently delete your profile, you can log into your account and submit a form to Facebook.
Another alternative is you can deactivate your account, which will remove it from Facebook temporarily but all of your information (info, pictures, etc.) will be saved internally. Go to the gear icon at the top right-hand corner of your Facebook page. Select the gear icon to get a drop-down menu. In the drop down menu, select “Account Settings.” On the left-hand column of the page, select “Security.” Once on the “Security Settings” page, go all the way to the bottom to select “Deactivate your account.” Later, if you want to rejoin Facebook, you can re-activate your account. You can read more about deactivating your account on Facebook's website.