You can avoid this clutter by being more selective, and you can do that by participating in discussion groups, or mailing lists.
Discussion groups are special interest listings of people with similar interests.
Unlike the newsgroups, which often tend to be loaded with flamers and strange ducks, discussion groups are guided by rules of conduct. Sometimes, in some forums, that is amusing, but it tends to get very old very quickly. The listservers are completely automated, and respond only to specific messages. The server for this list is located at the University of Kentucky. I did not put my E-mail address there.