[Adamantcheese]

This and the following three webcomic pages are probably the closest thing I've seen as "internet art" in it's most literal sense. http://www.avasdemon.com/2112.php

Although I guess now it's really commonplace, Patreon and all.

[whywhywhywhy]

https://www.newrafael.com/websites/ Rafael Rozendaal's work is probably my fave example of Internet Art.