[deluxaran]

If you want people to know about you and your product? Great then the first thing you want to do is to make sure that you have a great product that people will love and it won't be just buzz and promotion. I don't say that being active on the internet will harm you, but it may take away some of the time you would work on the startup. So the choice is all yours, but in my opinion the answer is somewhere in the middle, like starting to promote yourself and the startup after you are starting to be in the last stages of release so you could build a buzz for it and help with the first weeks.