I've actually already put a suggestion in the queue for changing how we sanitize the username field. It can't show up as username (Because alt and title are plain text by HTML standard and browser enforcement), but it could show up as "username" or "username (dreamwidth.org)". I put it in the suggestion system instead of the bug queue because it's complicated issue, how you deal with sanitizing HTML, and I wanted a discussion because I'm convinced I'm probably missing something. But yes, I agree that it would look nicer if you didn't see the raw HTML there.