Shopping with my kids I noticed we kinda have a replacement here in the UK in the shape of HMV (originally a spin off of His Master's Voice). When I was a kid it was mostly a record store, but now it's focused on what I'd call geek/"fandom" tat: posters, figurines, comics, band merch, etc. Whenever I'm dragged into one, it's always full of geek/fandom types hanging out.