Until the 1990s there were no restrictions on Internet usage or content. Governments did not concern themselves because Internet access was available mainly to a relatively small community of academics and engineers at universities, government research institutions and commercial research institutions. Despite the largely serious and academic nature of most material, a sub-culture also flourished of bizarre sexually-oriented, politically-oriented, and other materials often considered to be 4wacko’. The presence of such materials was tolerated by all users and even considered to be a sign of the health of the medium.