Algorithmic boost
Also known as: Reach boost
When a post earns disproportionate reach because the algorithm scored it as exceptionally engaging.
In depth
Algorithmic boosts kick in when the early engagement on a post (first 30-90 minutes) significantly exceeds your usual baseline. The algorithm then expands the candidate audience and shows the post to non-followers, sometimes pushing impressions 10-100× normal.
Boosts are why a small account can occasionally land a million-impression tweet — the early signal was strong enough to trigger broader distribution. Designing for early engagement (hooks, post timing, mutual seeding) is the practical way to chase boosts.
Related terms
X algorithm
The ranking system that decides which posts appear in the For You feed and in what order.
Viral
A tweet that exceeds typical reach by several orders of magnitude, usually driven by reposts and quote-tweets compounding.
Engagement rate
Total engagements (likes + replies + reposts + bookmarks) divided by impressions, expressed as a percentage.
Now put it to work
AutoTweet generates and schedules X content tuned for the algorithm — the same one this glossary just explained.