yes they can.this was answerd by mindy joseph
Yes, of course it can be done. And often, if you share computers, you leave it open and someone finds your account irresistible. Treat you facebook account and password like they're important.
Just change your password on the profile drop down menu thing
If you connect your Facebook to your Answers account, your Facebook profile pic will replace the orange man.
There is no way for any Facebook user to know if you are or are not looking at their Profile. In addition, some of the applications that claim that they can show you who is looking at your Facebook Profile is fake.
Change the pfp on your browser.
Go under "My account" to account settings. Or by your profile picture go to "edit profile" To change pictures, family members etc. Also the "Help!" page has useful advice on everything from friends to langusges.
To change Facebook profile information, go to My Account in the upper right hand corner of the page. Click on that and then the settings and details can be changed.
Only if an account is created using a social networking site - such as Facebook or Twitter; or an account on Yahoo! or LinkedIn - can you change the "avatar" on your profile.(See Related question on how to do this.)
Go to my settings under the My pages option on the right side and then disconnect the account you've linked to Wiki Answers(Facebook,Twitter etc.) Then connect to the site's account whose profile pic you would like to use as Wiki Answers profile pic.For example,if you want to use your facebook account's profile pic as your profile pic of Wiki Answers,connect to Facebook account and that pic will be used as your Answers profile pic.
Change your password
You can find the settings for one's Profile Pictures on Facebook by going to your Facebook account. Go to Privacy Settings. Then go to Customize Settings. Once there you can change the settings, if desired.
First of all, you must have meant the profile picture.If you do mean profile picture then I am telling you how to do it. Only if you have created an account using Facebook or Twitter; or an account on Yahoo, Google or LinkedIn, can you change the "avatar/ profile pic" on your profile. First of all, Sign in via Facebook/Twitter/Yahoo!/Google/LinkedIn If you have signed in with facebook then there are many steps. I am not saying it here. But if you have signed in with facebook notify me in comments. I will reply to you with solution at the earliest. The simple step to do it if you haven't signed in with facebook is to..... Click on it. (HOPE IT HELPS!)