The content that the client sees in his browser will affect his surfing
experience.
Every technology that can be sent to the client can be
used properly or abused.
As a general rule, simple sites that don't
try to push the web-clients to their limits work better.
It is usually a good idea to verify that your web-site operates fine even with
a minimalistic client like lynx. If not, you should probably make sure this
is the case.