You know, most free web hosts impose advertising on your website. This is done to cover the costs of providing your site the free web space and associated services. Some hosts require you to place a banner on your pages, others display a window that pops up everytime a page on your site loads, while still others impose an advertising frame on your site.
In general, if you run a business on the web, you will not want to take that kind of risk. Bad support and "down" times have a habit of occurring at the worse possible moments, such as during your tremendously ordering seasons.
To my mind,
Marblehost.com is really reliable hosting company and stability is its an alter ego. Besides, they offer free domain name if you purchase any web hosting plan.