I always preferred http://pastie.org/ as it's the prettiest and most readable of the bunch. You can select from a good list of syntax highlighting color schemes, for instance (and they have Twilight and Vibrant Ink...)

Here's an example I found on their recent pastes page:

http://pastie.org/pastes/1987149

Go play with the Theme dropdown.

I wouldn't be so quick to dismiss Pastebin's legitimate uses. I see it get used all the time for sharing debug output and system logs (generally between systems where there isn't any other easy method of communication).

The other ones may be prettier but Pastebin has mindshare.

What do you mean by "mindshare"? It's not like there is any real community on those sites. For me most of them are completely interchangeable. The only exception is Gist, which has the advantage of version control.

Lots of people (that I know, anyway) know what Pastebin is, and don't know of any of the other, similar sites. If they need to paste some output, they type "pastebin.com" into their address bar and that's it.

I think pastebin is still a very good site for code pastes. I haven't seen a site which offers more features and functionality. Sure if you just want a quick public anonymous post of some plain text, any will do. In my case pastebin.com is the only one i've found that had syntax highlighting for some of the more obscure languages I use (such as Go).

I'd also like to add http://ideone.com/

also http://jsfiddle.net/

If you, like me, are still addicted to typing in 'rafb..': http://rafb.me/