Anthony Wing Kosner
@akosner · Writer, Forbes.com, designer, developer
This is a brilliant way to get people into their funnel. On the free text checker on their website Grammarly uses the format developed by SEO firms to inform you of errors without telling you exactly what they are—unless you sign up! Getting the benefit directly in the browser provides better UX. This way, you just get the upsell when you click on "open grammarly," which probably provides better conversion rates.