The question isn't so much about whether it's a website or not. Instead, it comes down to what your longer term plans are for the business. Essentially, there are two different routes you need to choose between:

If your intention is to run the business yourself, with you doing most of the work and you owning the whole company, then you might want to consider incorporating as a Limited Liability Company (LLC) in your state. It's easy, inexpensive, provides liability protection for your personal assets, and allows you to take any losses from the business against your personal tax returns.

On the other hand, if your intention is to grow the business into something seriously big and scalable, it's a different story. Assuming you want to issue equity to your employees, raise money by selling shares to angel investors or venture capitalists, or otherwise fall into the ‘high growth’ category, you really have no choice but to incorporate as a Delaware C Corporation.

For this, the hands-down best, most comprehensive and least expensive solution is a brand new service called Gust Launch. But although it’s live, we haven't officially announced it yet, so please don't tell anyone. ;-)

For more information on how to form a startup, let me put in a shameless plug for my recently released book (already a New York Times best seller):

The Startup Checklist: 25 Steps to a Scalable, High-Growth Business)