A few sites mentioned by the panel
CMS Watch: Content Management, Records Management, Enterprise Search Reports
Content Management (CMS) News, Reviews, Resources – CMSwire
EDUCAUSE Community – Enterprise Electronic Content Management Constituent Group
A panel member mentioned a book by Mark White about CMS – but I can’t find the one he is referring to at the moment.
Another website referred to was ‘haakman’ – but unfortunately I’m not sure of the spelling (apparently it is spelt ‘in a crazy dutch way’)
cms-list also mentioned, but this seems to no longer be active.
I think I’ve found the CMS book, it’s The Content Management Handbook by MARTIN White, it’s certainly got a yellow and black cover which was the other identifying feature. http://www.amazon.co.uk/exec/obidos/ASIN/1856045331/qid=1121021447/sr=1-1/ref=sr_1_11_1/026-5338358-0912459