Jim Nielsen’s Blog
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How to Increase Reach Into Your Total Addressable Market With Zero Marketing

Use progressive enhancement.

If you don’t, it’s very possible people come to your website, can’t use it, and leave.

And any JS-powered analytics won’t see these people—or this market.

With progressive enhancement, at least you know people leaving your website are rejecting you for you, not because they never got the chance to know you.