Couldn't agree more! We at NIXTY think this is particularly important for a person's future educational and occupational opportunities. A blog is great and a LinkedIn profile is great too; however, we think what is needed is a more robust ePortfolio - an online presence that has a cv/resume, recommendations feature, and work display. The work display is particularly important because it allows the person to post work (documents, videos, papers etc.) that illustrate their competence. Further, it allows those w/credibility (professor, supervisor) to comment on the work so that others can get a better way of assessing a person's competence.The url for the person's eportfolio is www.nixty.com/name.
People definitely need to be proactive about defining their presence online. This is just one small way that we are trying to help.