I've made a lot of internet friends over the years. A lot of them I met from live chats on a particular musician or person. A few of them I was very close with and felt like they were my sisters or brothers. I could talk to them for hours and hours nonstop because with some of them we could just talk about random things for hours without getting bored.
IRL my friends and acquaintances at school don't seem to like most of the things I like, most of them only listen to the rap or pop music on the radio, and have never heard of Jrock before, and they don't like various other things I have interests in. We still usually have the same taste in TV shows and the same humor, or sports and other stuff like that but that's about it.