Wow, it's great to finally see you guys on Steam!
I played the shareware / demo versions of a few of the Avernum and Geneforge games years ago and loved them, though I couldn't afford them at the time. When I saw Avadon on Steam, I thought "hey this looks kinda like that game I played back then" and wha'da'ya'know, there I see Spiderweb Software.
I couldn't resist. I've already bought it. I'm hoping to see some type of compilation packs for your older games on steam too.
Best of luck in the sales.