A live event hashtag has a short life. It is quiet for weeks, busy for a day or two, and quiet again by the next weekend. Almost everything that makes it work happens before doors open, and almost everything worth keeping is collected in the week after. This guide follows that arc.
The timings below assume a one or two day conference or festival. A two-hour meetup compresses the same steps; a week-long festival stretches the middle.
Two weeks before: make the tag unavoidable
People use the hashtag they see most often. Put it in the ticket confirmation, the reminder emails, the agenda, the venue map and the event website header. Print it on badges and lanyards. Add it to the first and last slide template you send speakers.
Use exactly one spelling and capitalization everywhere. If the program says #DataDays and the stage screen says #DataDays2027, people will split between them. If you include a year, include it everywhere.
This is also the moment to check the tag. Search for it on X, using the Latest tab. If another event or an unrelated topic already uses it, change it now, while it's cheap to do. The hashtag guide has a longer checklist.
Three days before: brief people and plan coverage
Send speakers a short note: the hashtag, the event handle and whether you'd like them to share their slides. Many speakers will post about their own talk if you make it easy.
Write a coverage plan with names and times. For each block of the day, who posts from the event account, who reads replies and mentions, and who decides what goes on the screens. Big events often split this between two or three people working in shifts, because live posting is tiring.
Prepare the posts you know you'll need: the welcome post, a schedule reminder for each morning, speaker introductions, a Wi-Fi and practical details post, and the thank-you post. Writing these in advance frees the live team to react to what actually happens.
Agree on moderation rules before the day. Decide what you repost, what you answer and what you report. Harassment of attendees or speakers needs a fast path to a named person on site, and the event's code of conduct contact should appear in the pinned post.
On the day: before doors open
An hour before opening, post a test with the hashtag and check that it appears in search. If you're showing posts on a screen, test the display too.
Screens deserve their own warning. A screen that shows every post with your hashtag, unfiltered, is an invitation. Use a display tool that requires someone to approve each post, or don't show live posts at all. Many events now show a curated selection, refreshed by a person during breaks.
Pin the welcome post. Include the hashtag, the schedule link, the Wi-Fi details people always ask for and where to find help.
During sessions: give people a reason to post
"Use the hashtag" is a weak call to action. People post when they have something to say and somewhere to say it. A few formats help:
- Ask for questions to speakers via the hashtag, read by a moderator at the end of each talk.
- Ask for one takeaway per session and repost the clearest ones.
- Post a specific question at the midpoint of the day, such as the most useful talk so far.
- Repost attendee photos with credit, so people see that posting gets noticed.
Keep your own posts specific. A photo with the speaker's handle and one quoted line from the talk is more useful than "great session happening now". Spell names correctly; speakers notice.
For hybrid events, give someone the job of watching remote viewers. They can bring remote questions into the room, which makes people watching online feel like part of it.
Straight after: thank and collect
Within a couple of hours of closing, post the thank-you while attendees are still looking. Include a photo, thank speakers and volunteers, and say when slides or recordings will be available.
Then start collecting. Search the hashtag in Latest and save the strongest posts with their links. Do this within a day or two. Search results for older posts become harder to page through, and some posts will be deleted.
One day after: the recap
A short recap thread works well: the best photo, three or four attendee posts, links to what you promised, and the next date if there is one. Repost speakers who shared their slides.
If you said slides would be posted, post them. Unkept promises are what people remember about an event's online presence.
One week after: write down the numbers
Count what you can and write down how you counted it. Original posts with the hashtag, unique accounts posting, questions submitted, and anything you can see in your own account's analytics. Note what worked and what didn't while you still remember. Next year's team, which may be you, will thank you.
Measuring a hashtag campaign explains how to count by hand or with an export, and which numbers are worth reporting.
Common mistakes
A few patterns show up again and again:
- Announcing the hashtag on the day. People who didn't see it before arrive using something else.
- Different spellings on different materials.
- No one watching replies, so attendee questions go unanswered for hours.
- Unmoderated screens.
- No recap, so the conversation simply stops.
None of these need money to fix, only a plan written down before the event starts. The planner builds that timeline for you when you choose "Live event".
Questions
How many hashtags should one event have?
One main tag. A second tag for a specific purpose, such as remote questions, can work if every post also carries the main tag. Separate tags per session split the conversation and confuse people.
Who should run the event account during the day?
At least two people for a large event, one posting and one reading and answering. For a small meetup, one organizer with prepared posts is enough, as long as someone checks replies during breaks.
What if the hashtag gets spammed?
Stop showing it on screens, keep posting from your own account, and report spam accounts. Don't change the hashtag mid-event; it causes more confusion than the spam.