I have a webhosting at hostmonster.com. It includes unlimited sites and domains. Is it a problem if I put website for the company I started? Or that is more expensive for business websites? Is there a difference? thanks!
I don't see why you couldn't put up your company website in your hosting account. So long as your website doesn't violate their terms of service(TOS) e.g. something illegal.
If you are going to require any significant bandwidth, cpu or ram in processing your company website, you may want to stay away from anything that is "unlimited sites, unlimited domains." Means you are on a highly leveraged box that is likely very oversubscribed and depends on most people not really using their sites. If it is just information or a small side business, maybe that is fine. If it is very important to your business (or building your business), you may want to evaluate paying a little bit more for a better hosting plan. Even a virtual dedicated server at reputable hosts can be had for $30 or $40/month.