The Reseller's Playbook
Fees, algorithms and cross-listing guides for Poshmark, eBay, Depop, Mercari, Etsy, Grailed, Vinted and Whatnot, checked against each marketplace's own help pages.
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Poshmark Algorithm 2026: 3 Ranking Systems That Drive Sales
Poshmark's algorithm is 3 separate systems: search, For You feed, and party. Exactly which signals each one weighs in 2026, why follower count no longer drives placement, and the 2-shares-a-day pattern that wins.
Poshmark Bots 2026: What Is Safe, What Gets You Banned
Real enforcement data from May–November 2025: what triggers a Poshmark ban, recovery rates, the exact bot behaviors that flag your account, and the auto-share / auto-follow patterns that stayed safe through every crackdown.
Poshmark Listing Limit & Excessive Listing Policy: Retired July 2026
On July 23, 2026 Poshmark scrapped the May 2025 Excessive Listing Removal Policy. You can delete and relist without penalty again. Here is what changed, what is still enforced, and the new Seller Recognition criteria.
eBay Promoted Listings 2026: The Hidden 30-Day Attribution Tax
eBay changed Promoted Listings Standard attribution in January 2026. The "any-click, 30-day" window now charges ad fees on many sales that would have happened anyway. The fee math, and how to cut back or opt out.
eBay AI Policy 2026: What Seller Automation Is Still Allowed
eBay banned AI buying agents in February 2026, but seller automation (relisting, repricing, cross-listing) is still permitted. Exact policy text, what changed, what did not, and where the headlines got it wrong.
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