Open Source Portals

Harold is looking at open source Portals and posts some useful links, ‘specially like this translation from Wybo:

“Acquisition costs for open source are about half the costs of the cheapest proprietary solution, even when taking into account any system migration costs”

Now… I could go on about the utterly useless portal implementation in certain educational organisations (but I won’t, at least not yet) but I do wonder if there are any good portal stories out there or reconceptualisations of what a portal actually is and does?