I am doing this as a service partly and as a traffic aggregator to my profile/products/services partly - in both cases, reach will be high ONLY if the headline is highly optimized - I've learned how to write such headlines over the past 3 years of writing online.

Also, my Boosted articles + paid pieces make me more than enough to offset the hundred or so USD I might lose by keeping some articles free.

Now that you know my rationale, think and decide for yourself