It occurs every year around october-november; e.g. this year it is the 13th of november. It's held every year at the Flanders Expo in Ghent, Belgium (East-Flanders). Every year they have around 30.000-35.000 visitors.
Most of the music is techno, house and electronic music. (also in the name I Love Techno)
There are too many DJs that have played/will play at I Love Techno, but for a more detailed, and exact, list of the DJs, you can reffer to www.wikipedia.com and then search 'I Love Techno' in Dutch/Nederlands (the DJs aren't mentioned in the english page).
Personally i like the music first of all, i thought that the entrance price for a ticket lied around the 50 euros, the drinks are very good, easy accesable (Flanders Expo in Ghent where most if not all of the big events in Belgium are held), i think there will be a new law that big festivals like I Love Techno will be for 18+ only next year (2011) so this may also be great for the people not wanting kids around and a good security detail every year.