I still remember when Last.fm was the best wall to see the concert posters of small to medium-sized bands (my taste, metal). You just had to filter by city and

I still remember when Last.fm was the best wall to see the concert posters of small to medium-sized bands (my taste, metal). You just had to filter by city and you found a great night. And of course, discovering music similar to your musical taste, that really helped me to discover new bands.