Yes and yes.

All user accounts have a number. if you click [url=http://www.roleplayerguild.com/users/107]this[/url] link, you'll come to our profile, despite it saying "107" rather than "Ellri". The displayed URL will still be [code]http://www.roleplayerguild.com/users/ellri[/code] rather than [code]http://www.roleplayerguild.com/users/107[/code]. Because your username is a number, it tries to find the user with the account ID 21308, but the highest account ID number at this moment is 15415. That is why your profile links to a "Not Found" page, [@21308].