e-Portfolio Organisational View - a potential conflict?

Taken from an article by George Siemens its part of the supplementary reading list.

Diagram 1-1 details the stages of eportfolio development organizationally. As the levels progress, the concerns shift from the learner to implementation challenges for the institution and the industry.

Level 1 may include simple websites and incorporate blogs or wikis. Limited navigation of content is included.
Level 2 consists of dynamic web pages. Navigation and search features are available. Portfolio owners can also create different sections of the site to allow access for different reasons.
Level 3 requires institutional support of eportfolios, including instruction on actual use. The institution may also host the software to allow learners to build their portfolios.
Stage 4 requires the institution integrates portfolio use and development into the process of instruction and assessment
Stage 5 requires the institution adheres to standards, permits interoperability of the portfolio with other institutions.

A really interesting read, particularly liked the focus on the potential conflict between the learning institute and the student. Is this another attempt for the learning institute hijack, formalise/standardise something which is already available to students? Do we really need an e-portfolio system, cant we just use our blogs, emails, Google docs to store evidence? Doing it this way the student is in control, its flexible and portable. I think I would feel pretty frustrated if forced to use a institution controlled e-portfolio system.

Few quotes that stood out:

“Eportfolios will be successful if the urge to excessively standardize is resisted”

“The institution should not be in control of the portfolio”

“An online portfolio remembers more than successes – it is also a compilation of work-in-progress as a learner, and taken out of context, could misrepresent intended meaning. Like any web resource, eportfolios are subject to security and privacy risks.”

“Who has ultimate control – the learner or institution?”