Question, I am thinking of making a mcyt event myself, and I would just like to know if there is anyway you seem to be able to reach out and gain an audience so well? How do you suggest one would reach out to the demographic they're looking for?
Honestly I think the holiday exchange gets a decent audience because of
a) Already having an audience. This is the third major event that we've run through this blog, and we have over six hundred followers to it, just slowly gained over almost two years. This mod team has a record of events that have run majority successfully, so when we start up an event, people already know that like— this is a mod team who's fairly organized and will get pinch hits for drops, for example.
b) Deliberately designing events to be as broad-interest as possible. Holiday exchanges run in every fandom in this time of year, and we are deliberately open to all of mcyt, despite the matching difficulties that presents, to try and make sure everybody can be included if they want to be. And this is a decently long creation period with a low minimum. We only saw ⅔ of the signup for aufest, which has a higher minimum for creation, and when some of the same mod team did 48 hour exchange (which was still pan-mcyt and a low minimum, just an insane turnaround for gifts), we had about a ⅓ of the signup for the holiday exchange. So any sort of demographic tightening— focusing on a single smp, a single ship, a larger minimum, no art, etc— you're gonna see much fewer people.
So some of what we do to get the word out is just not replicable to every event. HOWEVER, what we do do is:
Tag our promo posts with every tag that seems appropriate for our theme— so like we tag our initial posts with every mcyt fandom over 1000 works on the archive— and also mcyt and mcytblr, and also fandom exchange and holiday exchange. Make sure that if people have followed tags, the post will show up in them.
A new promo post once a week during the promo period, tagged appropriately. It's the same information as last time, just in a new format, and reminding people of the deadline. You don't want to be annoying, so make posts as fun and polite as possible, but it's just a like "hey, this is happening, you're welcome to join!" thing. Things drop out of the tag fast, so you want to come back like hey! Here is a thing!
Reblog the promo post to our own blog once a day, at different times of day so you hit different time zones. One day you reblog it at 11pm, the next day it's going out at 7am. If people have followed the blog (and this is particularly because we have followers of the blog from old events), the odds that they see the promo post goes up.
This one is a bit more wibbly wobbly but try and sure that your promo posts have something actionable on them. If you have a discord, it has a join the discord link on it. If you have a google form, it has the google form on it. If you have prompts the prompts are either listed or teased in such a way that people click through. You CAN have hype-building promo posts that the thing people can do is follow the blog, but in that case you fill it full of teasers or info so people are like "well I gotta see what happens next".
Images are good? Either an image (id described) or as snappy as you can make it ad copy. You have like a second and a half to catch someone's attention in the tag, and you want that initial impression to get as much information across as possible, and also lure people to read more. So if you can communicate either "this person has a graphic designer/artist on the team" or (honestly what I'm usually communicating) "this person knows how to use canva", it helps bump the overall impression of your event as slightly more professional/organized, which increases the likelihood that people click through.
Promo posts are basically advertising, so you want to be informative, clear, interesting, funny if possible, and hook your viewer in some way. With that said, we got a decent amount of notes off of the recursive exchange "this is how you sign up" post because people were just like "you gotta take a look at this shit" so sometimes it just works if you have something worth sharing.
I am NOT professional at advertising this is just basically me having been on tumblr for a decade, so feel free to look at other events to see how they do it. But I hope this helps! And message me your event when it's ready to go, I'd love to signal boost it!