Well, as usual, the lawyers, including the estate-planning kind, have also been concerned. In The Wall Street Journal, Jacob Gershman reports:
"Delaware Gov. Jack Markell has signed into law a measure giving estate attorneys and other fiduciaries more control of their deceased clients' digital data."
However, that could be challenged by those supporting federal law. Back in 1986, Congress passed one barring companies like Google and Facebook from disclosing content without the explicit consent of the owner or a court order. Here is the WSJ analysis (sub. req.)
So, those concerned about their electronic communications or digital remains after their death should consult with their estate-planning lawyer immediately. One item to take care of is perpetual funding of their blog account. The company which provides the platform will demand monthly payments or else it will take it down.