If you have to ask such a question, then you are obviously having second thoughts as to your usefulness to the species.
Yes we are "intelligent" but seeing as this frame of reference only applies to mammals that can write in a verity of understood languages, we can't really see how intelligent squid, dolphins, cats or dogs are as we don't have any method of communication. You could always take the piss and start using Douglas Adams-esque references to dolphins being supremely intelligent, and the only ones that are left on earth are there to warn us of an impending doom, despite us treating them like amusements.
But, if you think about it, you might be "intelligent" but how much of today's achievements do you really understand? If you were given a heap of components, could you build something so "outdated" as a CRT TV? Or write a play to capture the hearts of an audience? As a culture we are only as brilliant as our brightest, and the rest of us are just excess. But again, its not like we are going to go killing each other because of our lack of usefulness. That's what we do to animals, seeing as they are the "lower" forms of life.
Mullahgrrl: Definately.
And please don't use the internet as a frame of reference to a great creation, even some of its creators have said they would have rather not created it seeing what it has been used for. Use fission, fusion, the wheel, gears, the transistor, Shakespeare, Tolstoy, the cotton gin, musical instruments, just not the internet.