This is as much for my own reference as anything else, but hopefully others will find this catchall useful. Another really fantastic resource for keeping up with the writing community on Twitter is Free Writing Events, who post daily with a roundup of writing tags. They also have a great calendar of writing events and contests on their website.

If you notice a resource or tag missing, let me know!

This page was last updated 20 September, 2017.

Daily Tags:

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Monthly Challenges:

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Mondays:

• #Meta4Mon – Metaphors and Similes from your WIP. Hosted by Cori Lynn Arnold
• #MartialMonday – Combat/Action lines with a weekly optional theme. Hosted by Ellis Logan
• #LoveLines – Optional theme. Hosted by Elle Karma and Amanda Kestrel
• #MuseMon – Optional theme. Hosted by Kosoko Jackson
• #MoodMon – Optional theme. Hosted by Renee Lozano

Tuesdays

• #2bitTues – Optional theme. Hosted by Ang D’Onofrio
• #BookishTues – Optional theme. Hosted by Nicole Noble
• #FoodParty – Optional theme. Hosted by Lexi Miles and Chloe Quinn
• #TerraTues – Optional theme. Hosted by Leigh M Lorien and Summer Hill
• #TueStories – Hosted by Janice Fosse
• #TuesTell – Optional theme. Hosted by Lindsay Pierce
• #TuesTropes – Optional theme. Hosted by Rebecca Frohling

Wednesdays

• #1lineWed – Optional theme. Hosted by RWA’s Kiss of Death Chapter
• #POVprompt – Weekly writing prompts to help explore your character. Hosted by Lexi Lefevre
• #TalesNoir – Optional theme. Hosted by John Cordial
• #WackyWed – Hosted by Bonnie Swanson
• #WeirdWriters – Hosted by Rebecca Frohling
• #WFWed – Hosted by Audra McElyea
• #WhyIWriteWed – Hosted by Natalie Summers
• #WineWords – Hosted by Benjamin
• #WritersLifeChat –  8PM EST, hosted by Jessica Ingold

Thursdays

• #3WordThurs – Weekly prompt. Write a sentence containing the three given words. Hosted by Brittany Pettegrow
• #MissMuseMe – Weekly prompts and optional line sharing themes. Hosted by B. E. Van de Viere
• #tfteotw – Watch the video and start writing. Hosted by Marc Tizura
• #Thurds – Optional theme. Hosted by A. B. Funkhauser
• #ThursTale – Optional theme. Hosted by Gloria Rabil Bankler

Fridays

• #FictFri – Optional theme. Post graphic/explicit lines to #FictFriNotG. Hosted by Gracie DeLunac
• #Fri1st – Your first ___ line in a WIP. Hosted by Angela Super
• #FriDare – Contest based on a prompt. Hosted by Mica Scotti Kole (the genius behind Free Writing Events)
• #Friday5th – Post the 5th line of any page of your WIP.
• #FP/#FridayPhrases – Friday Phrases. A weekly writing prompt. Hosted by Lara Meone Savine
• #SciFiFri – Optional theme. Post lines from your science fiction WIP. Hosted by jfx mcloughlin

Saturdays

• #ShareWrit – No theme line sharing. Hosted by Gracie DeLunac
• #SlapDashSat – No themes or rules, just freeform writing. Hosted by Rhyan Scorpio-Rhys
• #SciFiSat – Post lines from your science fiction WIP. Hosted by jfx mcloughlin
• #WhosYourCharacter – Hosted by Rebecca Frohling

Sundays

• #JustAddTea
• #RWchat
• #SaidSun
• #StoryCrafter
• #SunWIP
• #WhosYourCharacter – Hosted by Rebecca Frohling
• #WritersPatch

January

February

• #FlashFicHive – Daily prompts to help you hone your flash fiction writing skills. Hosted by Anjela Curtis, hashtag account is FlashFicHive

March

• #PitMad – For one day only, pitch your manuscript in a tweet! Agents will be reading and requesting. Hosted by Brenda Drake; contest rules are on her website.

April

• #FlashFicHive – Daily prompts to help you hone your flash fiction writing skills. Hosted by Anjela Curtis, hashtag account is FlashFicHive

May

June

• #pg70pit / #70pit17 – Pitching Contest Hosted for one day by Lara Willard. Check her website for details.
• #authorconfession
• #FlashFicHive – Daily prompts to help you hone your flash fiction writing skills. Hosted by Anjela Curtis, hashtag account is FlashFicHive
• #PitMad – For one day only, pitch your manuscript in a tweet! Agents will be reading and requesting. Hosted by Brenda Drake; contest rules are on her website.
• #WIPTruthOrDare
• #WIPRevelations

July

• #51writers – for and about strong female characters and their writers. Hosted by 51 Writers, posts are sometimes curated on their website.
• #ShareWords
• #WIPjoy
• #WIPTruthOrDare
• #WIPTunes

August

• #51writers – for and about strong female characters and their writers. Hosted by 51 Writers, posts are sometimes curated on their website.
• #AnthAugust – SciFi and Fantasy Worldbuilding hashtag game with _SantanaYoung_
• #authorconfession
• #FlashFicHive – Daily prompts to help you hone your flash fiction writing skills. Hosted by Anjela Curtis, hashtag account is FlashFicHive
• #WIPTruthOrDare

September

• #51writers – for and about strong female characters and their writers. Hosted by 51 Writers, posts are sometimes curated on their website.
• #CPmatch – 30 September. Find a critique partner with this matchmaker party.  Hosted by Megan Lally
• #PitMad – For one day only, pitch your manuscript in a tweet! Agents will be reading and requesting. Hosted by Brenda Drake; contest rules are on her website.
• #StoryVisuals – Tell your story in pictures. Each day is a prompt to post an image or gif related to a WIP or published work. Hosted by T. A. Hernandez
• #TweepWriter – Hosted by Nicole Noble

October

• #FlashFicHive – Daily prompts to help you hone your flash fiction writing skills. Hosted by Anjela Curtis, hashtag account is FlashFicHive
• Prep_tober – no dedicated hashtag, but a guide to getting ready for NaNoWriMo. Find more at host Rachael Stephen’s website.
• #WIPjoy

November

December

• #FlashFicHive – Daily prompts to help you hone your flash fiction writing skills. Hosted by Anjela Curtis, hashtag account is FlashFicHive
• #PitMad – For one day only, pitch your manuscript in a tweet! Agents will be reading and requesting. Hosted by Brenda Drake; contest rules are on her website.