This article is from the X-Men Comic Books FAQ, by Kate the Short (email@example.com) with numerous contributions by others.
Well, besides the fact that it's illegal under copyright law to
republish other people's artwork without their permission....
While it's perfectly possible, and commonplace, to post scanned artwork
to Usenet, it's not always a nice thing to do. The main reason is that
some people like to read their newsgroups using an off-line newsreader,
which downloads all the articles (and attached binaries) at once and
lets them read the postings without being hooked up to a modem.
Obviously, it's an inconvenience for them to have to download several
megs of binary graphics images if they aren't looking for them.
If you're looking for comic art on Usenet, the newsgroup
alt.binaries.pictures.cartoons is the closest thing you're going to
find--but be forewarned that X-Men art very rarely, if ever, finds its
way onto that particular group. Outside of Usenet, the Where Can I Find
It? FAQ has a listing of web pages and ftp sites with digitized comic