Hosting reselling is an old form of marketing. Welcome to the Internet!

As for is it worthwhile? Well, how many friends do you know? If you have a big social network and can convince them then yeah, you can make some money off of it. A buddy of mine started reselling hosting packages from a tier 2 service provider and slowly graduated into buying his own racks and providing better products. It's enough to get him a house and a comfortable living but it also took him 5 years of hustling and bustling and a friends and moderators of a tech-oriented web forum to continuously market for him.

If you scour the forums, it's typical that you'll find ads for them as well. And as for the guy that said you'll be fielding the tech questions: that's really true. Some service providers will be doing that for you, it depends on who you pick to partner with.

Should you get into it? Only if you do a bit more research than just pitching a question on Hacker News.

Suggestions on where to start:

http://www.webhostingsearch.com/reseller-web-hosting.php

http://www.devshed.com/reseller-web-hosting

http://www.thehostingnews.com/