First of all, great article. Did you write it yourself? Hard for me to tell on flixya who puts out original content and who doesn't. Either way, great addition to the community. Here are some additional Tips
1) Get Domain through Registrar.
Register through Network Solutions or GoDaddy or something similar. Don't let a hosting company buy a domain for you, because if it turns out you don't like the hosting deal and you want to host somewhere else, more likely than not the hosting company will not let you have the domain you bought with them (or they bought for you).
2) Easy Translation from Verbal to URL.
Your domain should omit dashes and should be a phrase that can be said verbally without creating confusion. For instance, you wouldn't want a domain that is spelled 'xtreme-weight-loss', because you won't be able to say it exactly like that verbally unless you over emphasize certain letters, say dash and then make note that it's spelled a certain way. if your domain is verbally said you tube dot com, people will usually automatically assume it's typed as 'youtube.com' not 'you-tube.com' or 'utube.com' or anything like that.