Five seconds. That is how long a visitor gives your site before deciding whether to stay, and this blog repeats the point often enough that it sticks. Gordon Robinson passes on syndicated marketing advice, and the pieces worth keeping are the concrete ones.
Vary the links in your regular emails, because an identical list every time trains people to ignore the whole message. Photograph products in detail, since a buyer wants a proper look before spending. Have one thing on your site nobody else has, because that is what a specific search finds.
There is a database point that goes further than most. Keep a record of what each customer bought and write to them about what sits next to it, rather than sending everybody the same thing.
The personal posts are shorter, on not giving up and on potential, and they are where his own voice appears.
Read the customer record advice if you have buyers and treat them all identically.