I've noticed a few people have Facebook and Twitter links on their profile. When you click on it however, you don't find their profile.
A solution to this is for Facebook just put your Facebook username, do not copy and paste a link to your profile. Just your facebook username. For example mine is t.vores so that's all I put on it.
For Twitter, just put your handle. For example mine is @Hired_Merc, so I've put that on it and it links to that.
Figured I'd post this for those who don't know.