I think it's fair to be skeptical, and there's certainly a fair share of poor educational programs out there.

Having said that, like anything in life, you get what you put in. And at least in the case of GT, their online program is exactly the same they have on campus; same content, same projects, same academic rigor. The only difference is that on-campus has many more classes to choose from.

Of course YMMV. I don't really care about the degree itself; doing it for purely personal enrichment.