Two Significant Search Warrant Opinions: Computers
The first one involves a warrant for a defendant's entire Facebook account. A link to the opinion, and a discussion of its significance by Orin Kerr, can be found here.
Mr. Kerr's discussion of the second opinion can be found here. The title of this article is: "D.C. Circuit forbids seizing all electronic storage devices in computer warrant cases"
Additional discussion here from fourthamendment.com, under the heading, "DC Cir.: The mere fact a person has a cell phone isn’t PC to search it; must be PC evidence would be found"