Is there much difference between a web startup and a new web company today?

I've been following countless articles and discussions on the Hacker News where the term "startup" is being portraited mainly as a new company developed around on web and not as the one which promotes and sells the latest high-tech products using the web.

These days I plan to form a company which will sell the latest technology products such as the IP cameras from the web. I plan to build its web infrastructure by myself, which will be based on MAPP stack (Mac OS X, Apache, PHP, PostgreSQL) on a Macmini.

So I bet on the idea that IP cameras will sell a lot and it will be the core activity of my company. But, I also think that such an infrastructure (MAPP on a Macmini) is what allows me to launch this idea without having too many financial risks.

And now comes the conceptual uncertainity: Is this kind of a company a web startup, a traditional (web) company or an hybrid of both?