Note to self (and whomever is intersted), the official list of Everyday Matters challenges / topics is here:

flickr.com/groups/59586185@N00/discuss/108608/

and a list is also here, if you are logged into the EDM Yahoo Group (below). 

The official Everyday Matters Yahoo Group.

Edited to add: Karen Says: "And … as “challenge mistress” there’s always a list on my blog"… karenwinters.com/kblog/edm-challenge-list/

:)