Bridge to Teribithia 

Now that this anon has deigned to explain the removal of text, I've checked, and he or she is right; there is no mention of Young at IMDb, the film's page, or her own homepage. That User:Shelbyyoung has added this to the page on Shelby Young suggests strongly that she's not Shelby Young; moreover, if she were, she shouldn't be editing the article on herself. Mel Etitis (Talk)  
I haven't taken a stance on the role dispute (Shelby says that she performed the role and is uncredited, and IMDB doesn't list uncredited actors I believe). My comment was geared more toward User:Shelbyyoung's user page with the picture of her holding a notepad with her user name to prove her identity. This IP address shouldn't be removing that. Leebo T/C  
IMDb lists uncredited actors if they are given the information and some sort of verification; so if the real Young did appear in the film, it would be easy for her to get that credit added to her IMDb listing (heck, even my kid is in the IMDb, and her scene only appears as an "alternate ending"). That's got little to do with the impersonation question.Orange Mike  
1. Leebo is correct, IMDB doesn't list uncredited actors (only on special occasions, in fact. See the case of Owen Wilson in "Night at the Museum". No onscreen credit, therefore no IMDB credit. It was only after users complained that Wilson had received credit in commercials, his credit was added. 
2. Regarding the film page, the page only lists the main actors involved in the film. It's not going to list a voice-over actress.

3. Shelbyyoung.com has not been updated since 2004-2005, so no credit after that would appear on the site, and is therefore, an invalid source.

4. Many people have edited articles on themselves here. To suggest that Shelbyyoung is not Shelby Young solely on the basis of the fact that she is editing her own article is faulty logic. I don't know how many people remember the case of the user juliannarosemauriello, who claimed to be the real thing, then went on to edit articles clearly not geared toward a (then) 14-year-old. To my mind, the fact that Shelbyyoung has only edited with regard to herself, and the photo, which 69.132.199.100 claims is photoshopped (and what a lovely trick that would be), proves Shelbyyoung's identity. 69.132.199.100 claims that the photo is a "popular" one that has been photoshopped. If so, where is it? I see no evidence of a photo looking remotely like that doing any sort of image search. Ispy1981 

Jiust to make clear on the last point, that I offered no such argument. Mel Etitis (Talk)  
Sorry bout that. It was early for me, and I hadn't had my coffee yet. 
Ispy1981