Did you see the opening day box office of The Dark Knight?
Your ratings are floundering because you keep nominating movies for Best Picture that, at best, are surprise indie hits (last year's Juno was the biggest box office draw at a bit above $100 million... same story for the prior year's pool with The Departed). Your relevance is floundering.
Please nominate The Dark Knight (and, obviously, Heath Ledger). For your own sake. Not just to attract more viewers - which it would do - but because the movie is legitimately superb and thus worthy.
PS - Also feel free to nominate Robert Downey, Jr. for his performance in Iron Man.