PostEaseIgnoring the custom-feed ecosystem entirely
Since a meaningful share of discovery happens through topic-specific custom feeds, never checking which feeds exist for your niche means missing a real, low-cost path to a genuinely interested audience beyond your own followers.
Padding a post to fill the character limit
A post stretched with filler to use up available space usually reads worse than a shorter, sharper version of the same idea. The character limit works better treated as a forcing function for clarity than as a target to fill.
Posting without ever replying to anyone
An account that only posts original content misses a low-cost way to build visibility: replying to other accounts in your field, especially ones already active in relevant custom feeds.
A post with nothing to reply to
Since reply depth matters more on the ranked Discover feed than likes alone, a flat statement with no genuine question or invitation to respond tends to underperform a post that leaves an obvious, specific opening for a reply.