Small asks first
davidgcohen.com
davidgcohen.com
Other than that, very helpful article.
A lot of the people that want to "build a relationship" are extremely annoying because of this, i dont want to build a relationship with you, if you just get down to doing something then a relationship just happens naturally.
Also, the article didn't seem to suggest pussy-footing to me - rather, it seems to suggest that if you don't know someone very well, it's rude to ask/demand them for a large investment of time in order to help you. Sending a short e-mail vs. asking for a phone call isn't pussy footing around, it actually sounds a lot more direct to me.
Email lets the respondent control the conversation, rather than the requestor.