How do I stop giving away free advice in my DMs?
Keep answering, but move the long answers behind a paid link: reply briefly in the DM, then send your page for the full version. Nothing about your free content changes.
Why "just stop replying" fails
The DMs are evidence that your audience trusts you. Going silent spends that trust to save time. Charging for the long answers keeps the trust and pays for the time.
What it is worth in hours
Ten long DM replies a day at ten minutes each is over eight hours a week, unpaid. At the $23 median tip on Nudge the same ten answers a day is a different business.
60 answers in the Nudge help centre.