I am hosting a 24/7 server called Public Freebuild. It is a minecraft classic server with a great community. Public Freebuild Classic has very kind staff, although they do follow the rules. Visit our website for more information.
The website URL is http://publicfreebuild.freeforums.org/
We also have a wikipedia, the link is http://publicfreebuild.wikia.com/
The server is 100% stable with no lag whatsoever. Come join the fun!!!