This is an interesting point, but many have heard of those providers and they're very popular, very established, and you can generally count on a very professio

This is an interesting point, but many have heard of those providers and they're very popular, very established, and you can generally count on a very professional and reliable service. What I see though is that there are dozens of servers, none of which I know anything about. So it's more like if you had to select an e-mail provider from a list of domains you've never heard of before. Not impossible, but not as easy as signing up on twitter.com.