I'm interested to know genres and forms you write – please let me know in the comments, and I'll try to find suitable competitions and publication opportunities for you. I ask, because sometimes I see something which seems very niche, or is just so different from the kind of thing I write, that I wonder if it's worth posting about it. Obviously I can't promise to find something for everyone, but I can avoid dismissing an opportunity someone would have considered perfect.
Free to enter writing competitions
Thanks to Alyson for the link to this short story competition. They want There's more info on the website to help. The prize is $3,000 plus possible publication in an anthology. If the anthology happens, writers of included work will earn a share of the royalties. Looks like anyone over 18 can enter.
Other opportunities
Thanks to Sheila Crosby for telling me about this grant for older writers of speculative fiction. (I can't say I like they way they speculate us grown up writers look, but I wouldn't mind the cash!)