Why advertise during the superbowl?

I, like many, always really enjoy the ads that play during the superbowl. This year was no exception the laughs seemed to be nonstop during the various time outs and halftime break. As I was thinking on what I wanted to blog about for today I realized that I felt a little unsure what the main point of most of the superbowl ads are. Obviously they are still ads and still trying to sell us all on something, but at the same time so many of these ads seem to focus on comedy and entertainment rather than actually selling anyone on anything. I know that there is the strategy that if you can make a consumer remember an ad they will remember the product, but what do you do when the product really is just so overlooked in the actual tv spot that no one knows what the commercial was for and so they do not ever use that product. My case and point for this is the "Go Daddy" web hosting company. Every year they put up an almost sexy commercial that goads you to go online and see more, but no one wants an errand from a company that many will never need much less understand what is. The other problem is that if people want to see scantly dressed women doing things online, most likely they will not go to "Go Daddy." I just cant quite seem to find the line here between just entertainment and actually advertising. All in all though I was entertained, so thanks for spending all that money to get me a laugh go daddy...