I've had a few people ask me how to get their Flickr link in their profile. Some users are getting the error that they can't input symbols into the text field, but their Flickr link contains symbols. In order to fix that error, you'll want to pick a custom Flickr "Friendly URL", and then use that new URL for your Flickr link.
Go
HERE to pick a friendly URL for your Flickr account, and then come back and set it up in your profile. Feel free to post here if you have issues and I'll see if I can help you get it sorted out.