Visiting teddit.com takes me, via a series of redirects, to something serving up spammy-looking advertisements. Curiously, if I do the same with the Firefox dev tools open, that doesn't happen; instead I just get an empty page.
Maybe taking a valid reddit URL and replacing "reddit" with "teddit" produces something useful; I didn't try. But I'm not much inclined to trust this site.
That’s because the replacement is teddit.net instead of teddit.com