I have been writing about LinkedIn invisibility for two months. Last month I tested it on myself.

The setup: rotate seven headline patterns across thirty days, one week per pattern (with two patterns getting two weeks because I needed more data). Hold the rest of the profile completely static. Track inbound recruiter messages, profile views, and search appearances via the analytics tab. Use a private alt-account a friend ran to verify search position for the same target keywords across each headline.

Two patterns won. Five did not. Here is what shipped and what flopped.

The seven headlines I tested

I tried to hit the actual variance you see in the wild rather than only the ones I expected to win.…