If participation on the internet is meant to be purely 'fun', I have no doubt that the novelty and excitement wears out over time. But... if there is a feeling of exploration and curiosity esp if it pertains to one's job or interests, this leads to something that probably endures. I think how exciting it must be for people deeply involved with hobbies or special interests to be able to find other people from all over the place with whom to share the same enthusiasm.