I think that's this bullet: * Don’t waste time on your website design (but do write) Specifically, "do write". Your writings will be way more accessible than

I think that's this bullet: * Don’t waste time on your website design (but do write) Specifically, "do write". Your writings will be way more accessible than conference talks. He also may mean "don't sponsor or have booths at conferences or conventions". I personally find them valuable for connections but you don't need to attend them to make sales.