As you probably know by now, the ABA Model Rules and the rules in many jurisdictions have been amended to include a comment related to competence as it relates to modern technology. Paragraph 8 of the comment to Model Rule 1.1 states that "[t]o maintain the requisite knowledge and skill, a lawyer should keep abreast of changes in the law and its practice, including the benefits and risks associated with relevant technology . . . ."
The adoption of this language in the comment of the Model Rule, generated a good deal of literature and debate. I have posted a number of comments and podcasts on the subject (from oldest to the most recent: here, here, here, here, here and here.
Now here is the latest one. IP Ethics and Insights has a short article on "technical competence" covering e-discovery, social media, and cloud computing.