I tend to use Comic Rocket for those rarely-updating sites too; anything with a next link works. For instance, I read http://www.mrmoneymustache.com/ that way, and several other things that update even less often (a few times a year).

Every time I try an RSS reader, I find myself drowning in things I don't actually care to read in their entirety. And I prefer to read almost everything on the original site, rather than in a newsreader.