Carolyn F. Hank has self-archived "Scholars and Their Blogs: Characteristics, Preferences, and Perceptions Impacting Digital Preservation" in the Carolina Digital Repository.
Here's an excerpt:
This descriptive study investigated scholars who blog in the areas of history, economics, law, biology, chemistry and physics, as well as attributes of their respective blogs. It offers an examination of scholars' attitudes and perceptions of their blogs in relation to the system of scholarly communication and their preferences for digital preservation.. . . Most feel their blogs should be preserved for both personal and public access and use into the indefinite, rather than short-term, future. Scholars who blog identify themselves as most responsible for blog preservation. Concerning capability, scholars perceive blog service providers, hosts, and networks as most capable. National and institutional-based libraries and archives, as well as institutional IT departments, are perceived as least responsible and capable for preservation of scholars' respective blogs.