Keep full link in profile contact


We have 3 contact fields in account details, those are Skype, Facebook and Twitter.

When I enter Facebook link in Facebook field, facebook domain is stripped and only "zuck" left in the field. Same behavior for Twitter.

I think it is awkward, it is not likely Facebook will ever change their link format so it makes me confused. Now I have to copy username, paste or search on Facebook.
Shouldn't it be better to keep full link so user can click and open?