The answer better be “you”. Your domain name is like the title to your house. Whoever owns it can build or destroy whatever is on the property. After you buy a domain name and the time to renew comes, the renewal notice should only come from the provider from you purchased the name by email. Never respond to any renewal notice that comes in the U.S. Postal Mail. Companies that do this are trying to get you to switch your domain name to their service and often at a much larger cost than what you would be paying at your existing Registrar. While domain name pricing is changing as more top level domains become available, for most cases, you do not need to pay more than $10-12 per year. You do not need Business Registration, or other certification add-ons that only amount to extra fees with no benefits.
When deciding on a domain name, often the preferred choice is already registered and most people are not inclined to seek a potential buyout. A second option is to consider derivatives of preferred domain name. E.g. trinityriveronline.com. However, that approach can dilute your brand since ‘online’ is a generic keyword and has little to no added value. While most people and businesses want a “.com” Top Level Domain (TLD), it is not always feasible. The next consideration is alternative TLDs (ie .net, .org, .info, et al). In most cases there are no rules that prohibit using them for unintended purposes. A for-profit company can use .org and a non-profit can use .com. To some degree, the choice of a TLD is similar to a street suffix such as “Ave., Rd, St., Pl., and Ct”. - there is no material difference but perception can be an influencing factor in the final decision. Finally, there is debate over the value of choosing a keyword-based domain name like “best-camera-prices.com”. The consensus is that the little value it has for Search Engine Optimization is not enough to compromise ones brand. As evidence, the most successful, popular, and recognizable properties on the web do NOT use keyword-based domains. Yahoo!, Google, Amazon, eBay, YouTube, FaceBook, Twitter, and Bing.