Which of the following would be a good use of retweeting for an independent consulting engineer who uses Twitter to build relationships with potential clients?

a. Avoiding retweeting under any circumstances, because it is tantamount to plagiarizing.

b. Retweeting every tweet he or she receives so that clients know how well-rounded and well-read she is.

c. Retweeting fun and interesting messages on nonbusiness topics as a way to build an emotional bond with potential clients.

d. Retweeting selectively, sharing only messages that meet two strict criteria: providing information that followers can use in their work and portraying the consultant as an expert who is up on the latest developments in her field.