I decided to give a new and more thorough review of TranceTraffic.
Here is the home page of TranceTraffic:
Here are the different genres of music TranceTraffic has to offer:
Here is how the browsing page looks like:
This is what defines TT, the TT packs:
Sometimes they are freeleech too, but the Freeleech at TT is a bit screwed up, and sometimes still counts towards your U/D ratio.
EDIT: Freeleech has been fixed.
TranceTraffic also has forums, but I don't usually use them, I use the Shoutbox to talk to people (which is always very active). Here is a screenshot:
I don't really like the default layout for the TT forums, but I'm pretty sure you can customize it.