well, the brand "techno" is rather vague. there is house, electro, trance, dance, ambience, etc. i'd say start with some DJ Tiesto. he's rather popular. good stuff too(has a song or two featured on the Pirates soundtracks)or to really dive in check this website
http://www.jamendo.com all songs are released by the artists under the creative commons license. i've found quite a bit of "techno" that i like there, although most of it is european. this is good for me because i rather dislike most of the american stuff(it tends to be very repetitive and boring).i'm actually debating on seeing tiesto next month in concert, october 31st.
None. Vibe is gone.