The Western Online - this looks like an interesting place. Everything western goes here but be sure to check out their guidelines. They are also looking for western art.
SpaceWesterns is looking for western type stories set in outer space along with several other things such as steampunk and space opera.
Rope & Wire - Wants western stories along with cowboy poetry They even accept contemnporary western stories.
Daily Love is a new market that publishes romance online everyday. They like flash fiction so if you have anything this might be the place to send it.
Moon Washed Kisses - another relatively new online "zine" that wants flash and poetry. Nothing erotic though.
Stony Meadow Publishing has a Robot Romance Novella contest going along with another short romance contest that happens monthly. Again, no erotica. They also have songwriter and poetry contests.