Commodore BBSes Return using the Internet.
oldbitcollector writes "Several Commodore 64 enthusiasts have developed a method for putting Commodore BBS sytems on the Internet. Users can "dial" using a standard 64 connected to the Internet or by using a "CG Term" for the PC. Details can be found here."
Actually, IIRC the 1541 was single-sided, single-density, around 160kb of storage.
But yes, there are various different expansions available, including hard drives and more memory. There were various 3rd-party options, and now someone has developed a way to hook up an IDE drive to a C64. It also can be used to access CF cards.
I believe that apps had to support the memory upgrade peripherals. I seem to recall them being fairly popular with GEOS users.
(And there're a lot of old BBSes available through telnet, though I dunno about C64-based ones.)
Been using sigs for 20 years. Nothing funny left to say.