I do not think that a sample internet marketing plan would be of real help, sure it can give you a basic idea of the steps you can take but there is always a lot more to internet marketing than a basic plan.
I visited the link and it say "sorry the page does not exist".
According to imGauge internet marketing is the best way for start ups to get recognition. More over you can directly contact end users. FYI more than 1 million websites are linked with facebook, one can imagine how internet marketing is helpful for any business.