Here is a sorted list of the tools people reported using with their networks and communities.
Blackboard-~Elluminate-~Wikispaces
Blog-~Picasso-~Google~Sites-~Ice~Rink!
Classroom20.com~and~Education.Ning.com
Community~Zero-~Elluminate
Community~Zero-~Elluminate-~Google~Reader-~Flickr-~Facebook
Desire2Learn-~Elluminate
Discussion~Board
docs.google
Drupal-~Facebook-~Skype
drupal-~wordpress-~flickr-~delicious-~facebook-~beebo-~mailman~lists
Elluminate-~Google~Groups-~Blogs-~MediaWiki-~Twitter-~FeedDemon
Elluminate-~Google~Groups-~G~Reader-~Blogs-~Moodle-~Twitter-~Facebook-~UStream-~Delicious-~Twine-~Diigo
Elluminate-~Google~Groups-~Google~Reader-~Blogs-~MediaWiki-~Twitter~~~~
Elluminate-~Google~Groups-~Google~Reader-~Blogs-~MediaWiki-~Twitter~~~~
Elluminate-~Google~Groups-~Google~Reader-~Blogs-~MediaWiki-~Twitter~~~~
Elluminate-~Google~Groups-~Google~Reader-~Blogs-~MediaWiki-~Twitter~~~~
elluminate-~google~reader-~blogs-~ustream-~moodle-~twitter-~flickr
Elluminate-~Moodle
Elluminate-~multiple~blogs-~MediaWiki
email
email~list
email~listservs
email-~forum
email-~static~websites-~e-newsletter
ePresence-~listserv
f2f-~Moodle
facebook
FaceBook-~email
First~Class-~Movable~Type
google~group
Google~Groups
Google~Groups
Google~Groups-~WikiSpaces-~email-~interactive~teleconferences
Google~Groups-~WikiSpaces-~Skype~Chat
Google~list-~blogs
Google~List-~SL-~wikis-~blogs
Google~list-~wiki
Google~Reader
Google~Reader-~MediaWiki-~MS~Outlook-~Netvibes
Google:~mail~and~calendar-~Drupal-~Moodle-~Skype-~Facebook-~Twitter-~Technorati-~LinkedIn-~Flickr-~etc
KU~Workgroup's~workstation
LinkedIn
listserv
Listserv
listserv
listserv
listserv
listserv-~forums-~delicious-~twitter
Listserv-~Google~Calendar-~Eventful-~GReader
listserv-~twitter
listserve
listserve
mailman~list-~aggregator~agregating~blogs
Moodle
Moodle
Moodle
Moodle
moodle
Moodle-~Delicious-~MSN-~Skype-~Facebook-~iChat-~Twitter-~blogs
Moodle-~Elluminate-~Blog-~Wiki
Moodle-~Elluminate-~UStream-~Google~Reader-~Wiki
Moodle-~Facebook-~Ning
Moodle-~Google~Reader-~Elluminate-~FB-~Twitter-~Google~Groups-~Flickr-~YH~Groups-~Delicious
Moodle-~Listserv-~Blog
Moodle-~Twitter
Moodle-~Twitter-~Facebook
Moodle-~Twitter-~Facebook-~-~LinkedIn-~MindMeister
Moodle-~Twitter-~Facebook-~LinkedIn
Moodle-~Twitter-~Facebook-~Technorati
Moodle-~Twitter-~Facebook-~Technorati-~Delicious-~LinkedIn-~MindMeister-~Slideshare
Moodle-~Twitter-~Facebook-~Technorati-~LinkedIn
Moodle-~Twitter-~Facebook-~Technorati-~LinkedIn-
Moodle-~Twitter-~Facebook-~Technorati-~LinkedIn-~MindMeister
Moodle-~Twitter-~Facebook-~Technorati-~LinkedIn-~MindMeister
Moodle-~Twitter-~Facebook-~Technorati-~LinkedIn-~MindMeister
Moodle-~Twitter-~Facebook-~Technorati-~LinkedIn-~MindMeister
Moodle-~wiki-~email-~elluminate-~ustream-~twitter-~facebook-~Second~Life-~Google~groups
myspace
Ning
Ning
ning
ning
NING
Ning
Ning
Ning
Ning-~blogs-~Twitter
Ning-~googlegroups-~skype-~blogs
Ning-~wiki
offline
offline~meets-~wordpress-~mailman-~eventwax
offline-~telephone-~boudlr-~email
OS~lists;~email;~blogs;~wikis;~forums;~webcasting;~Google~docs;~Squidoo;~Flickr;~Skype;~Caucus;~YouTube;~assorted~proprietary~applications
own~list-~blogs
previously~delicious
ProBoards
proprietary~PatchworkPortal~of~wiki-~forum-~blog-~idea-mapping;~Google~docs;~email;~Facebook;~LinkedIn;~Skype;~MindMeister;~Technorati;~Squidoo;~Flickr;~Second~Life;~Caucus;~YouTube
proprietary~PatchworkPortal~of~wiki-~forum-~blog-~idea-mapping;~Google~docs;~email;~Facebook;~LinkedIn;~Skype;~MindMeister;~Technorati;~Squidoo;~Second~Life
proprietary~PatchworkPortal~of~wiki-~forum-~blog-~idea-mapping;~Google~docs;~email;~Facebook;~LinkedIn;~Skype;~Technorati;~Squidoo;~Second~Life;~webcasting;~Caucus;~YouTube
proprietary~PatchworkPortal~of~wiki-~forum-~blog-~idea-mapping;~Google~docs;~email;~Flickr;~Facebook;~LinkedIn;~Skype;~MindMeister;~Technorati;~Squidoo;~Second~Life;~~Caucus;~YouTube;~Yugma
shared~office
SL~virtual~world-~twitter-~blogs
Twitter
twitter
Twitter
Twitter-~Blogs-~UStream-~del.icio.us-~chat-~Skype
Twitter-~Facebook-~Skype-~mail
very~sporadic
virtual~world-~listserv-~Facebook-~skype-~blogs
Web~Crossing-~blog-~Elluminate
web~crossing-~wikis-~blogs-~skype-~twitter-~etc
WebCrossing-~Blogs-~Delicious-~skype
Webcrossing-~twitter-~blogs-~phone~bridge
WebCrossings-~blogs-~RSS-~Twitter
WebCT-~email
WebCT/email~listservs/TAG-listservs
webserver/Adobe~contribute
wetpaint~wiki-~blogs-~twitter
wiki
wiki-~blogs~twitter
wiki-~Elluminate-~Google~List-~blogs-~SL
WiZiQ-~Wikieducator-~Youtube
Wordpress
wordpress-~flickr-~vimeo-~delicious
Workstation-~Elluminate-~GoToWebinar-~blog
Yahoo~group
Yahoo~group
yahoo~group~mailing~list
Yahoo~groups
yahoo~groups
Yahoo~Groups-~Tappedin-~Elluminate-~blogs-~SL-~Twitter-~social~networking~sites
YH~Group-~SL-~Wiki-~Twitter-~Ning-~WiZiQ-~+
YH~Groups-~Ning-~Twitter-~Google~Reader-~WiZiQ