One I love is 'harderfaster.com' You might also wanna look 'Genero Project' great bunch of guys on there. 'Hardsignal' is great for mixes. Level-1.org.uk is great for radio, chit chat and mixes. 'SPRACI' and 'Dales Techno Events' are great for listings. 'museumoftechno.org' is also worth a visit.

peace