According to ralan.com, there is a new twitter poetryzine, Microcosms. If you hurry, you can be their first follower. They're in their first submission phase and will print original science fiction/fantasy/horror single-tweet poetry ($1) and reprints (exposure).

FFO doesn't do poetry, but here is a speculative poem from 3 Quarks Daily about swimming in space-time. We'll only quote a tiny bit since the poem is short:

...cumulous as the cloud of
dark hair I’d one day wear
I dove down and came up
swimming in space time....

3 Quarks Daily is an eclectic, fun and highly rated blog. Outlets of speculative poetry include Strange Horizons, Abyss & Apex, Asimov's and others. A good source for speculative poetry publications is the Science Fiction Poetry Association's award site for the 2009 Rysling winners for short poems.