Yes you can. Just link your profile to a social networking site via 'my settings' and the picture on your other account will show up instead of the Orange Man.
To change your profile picture on wikianswers go to your profile and upload it from there.
For now, you cannot relink a different picture to your WikiAnswers account profile picture, but if you used a social networking site such as Facebook, your profile picture on facebook will be the profile picture replacing the orange guy on your WikiAnswers page. For an example, I linked my Yahoo email to my WikiAnswers account, and the picture I have on Yahoo will be the picture on my WikiAnswers profile (check it out if you want).
If you're referring to the picture located beside your name on your WikiAnswers profile, then that picture can only be changed when you add a Facebook, Yahoo, etc. site to your account. If you want a picture on your profile, simply copy and paste the URL.
the picture dat has the most comments
You don't - only I can change my profile picture.
Many users are given the option of connecting their Wiki profile with their facebook profile. Once this is done, the default picture of your facebook will become the picture in that space on Wikianswers. There is an option at the top of your profile with a link that allows you to connect your Wiki profile to your facebook profile. Once clicked, your facebook picture will now appear as your Wiki picture where the orange figure used to be.
If someone is claiming to be you on their WikiAnswers profile, please contact WikiAnswers @ Answers.com (no spaces).
Currently Profiles are very limited, but in the future we may allow you to change various parts of your Profile to suit you.
Go to your profile, and then hover over your picture. Then click change profile picture.
go onto my profile and you can click on the picture icon
Go to settings>Profile and change the profile pic.
Your mafia wars profile picture is your facebook or myspace's profile picture.