having your main keyword in ur website url is key, not
that important but it can help you. if one has a web hosting company and in their website url they have the word 'host' or 'hosting' this will help them. that is why its important to choose a good url. although some websites ignore to have their main keyword in their url...this could give you an advantage over other websites...
that is why i recommend to alot of people to use
co.cc domains because that way u can get your favourable or more desired domain name that you want as opposed to .com or .net domains...if u see wut i mean....
go
here if you want more info on this...