Back in the day I used to spam tracks constantly. That's lead to certain artists clogging up my Top 30 list for years after, at the expense of artists I now actually listen to. Thus my Top 30 list is actually quite skewed towards what my tastes were, rather than are.
Here are the artists from my Top 30 who, despite their high placement, I haven't listened to extensively in years.
1. I rarely listen to one third of my Top 30 artists any more.
2. The artists who I used for night-time playlists comprise most of this list.
3. I listened to a hell of a lot of music between 2005-2007.