I’m the current editor of Seven by Twenty, a journal of Twitter literature, which was founded in 2009 by Joanne Merriam. For a collection of work from our first two years, check out 140 and Counting (Upper Rubber Boot Books).
Our submission guides are as follows:
Submit to: firstname.lastname@example.org with the word “submission” in your subject line and your work included in the body of your email. No attachments.
Send: 1-10 pieces. Tweet-length (140 characters) fiction and poetry. Please include a tweet-length bio with your byline.
E.g., For sale: Baby shoes, never worn.
Bio: Ernest Hemingway is the author of such works as The Old Man and the Sea, The Sun Also Rises, and A Farewell to Arms.
Formatting: It’s Twitter, so no bold or italic formatting. Typically, we also do not include titles.
Reprints are welcome. However, please don’t simultaneously submit. We’d rather reprint your work later than find out it isn’t available now.
Rights: We ask for one-time electronic rights and archive rights–works will appear and remain on Twitter. Otherwise, you retain all rights to your work.
Reading period: Year-round.
After a rejection, please wait two weeks before submitting new work. After an acceptance, please wait a month after we publish your work before submitting more.
Payment: Seven by Twenty is a nonpaying market.
Genres: Literary and speculative works of all types are welcome and encouraged. We will consider 5-tweet serials.
Holidays for which we typically seek themed work: New Years of all traditions, Valentine’s Day (14 Feb), April Fool’s Day (1 April), Earth Day (22 April), Victoria Day (20 May), Memorial Day (27 May), Canada Day (1 July), Independence Day (4 July), Ramadan, Labo(u)r Day (2 Sept), Yom Kippur, Hallowe’en (31 Oct), Veteran’s Day (11 November), American Thanksgiving (28 Nov), Hanukkah, Christmas (25 Dec), Boxing Day (26 Dec), Kwanzaa (26 Dec-1 Jan).
Feel free to send work for other holidays or awareness weeks!