Hello and welcome, both the customers and the providers,
The basic idea of this place is to be(come) a high-quality community for sharing knowledge, information and offers.
To build a community and avoid any "shady" offers as best as possible, we have rules - listed on the rules page:
Basically, you can post offers for hosting (and other IT-related services) and present your company for free. However, to do that, you must apply for a provider tag. The application boils down to showing the admins/mods your company registration info, and having an account here that is at least 6+1 days old, with at least 6-1 forum posts. This is still a buyer-beware market, but some bare minimum due diligence in vetting the offers is a good idea.
The details are on the Guidelines & Rules page.