Last night was the first time I'd ever visited a a comic book store to pay my condolences. It was surreal, to say the least.
I can't say I knew Bill Liebowitz, but I saw him all the time at GA, and he always treated me with respect during those early years, when I was frantically catching up with Gaiman and Miller and Moore. No condescention, no patronizing looks -- just a nice smile and perhaps a recommendation or two as he handed me my crack. Many girl comics nerds will tell you, that's golden. He was a true ambassador.
Oddly, I can tell you the last time I saw him: out in front of his store the morning of the AIDS Walk, playing with his yo-yo brigade and cheering us on as we limped past. It was 10:30 in the morning. He didn't have to be there.
There should be more people like Bill Liebowitz in the world, and the fact that we're one less is more than a little sad.