km4dev is using their own domainname and indeed no adds so this is not a free ning. But again what happens to ning is example why I am reluctant to use a hosted solution because you never know how and when they will change there policies. Therefore I still would like to mention Dgroups (completely working through email as well) and things as Elgg and Grabgrass, we do not need hosted solutions.
or click the yellow Donate button now and go to the PayPal site with further indications. Note on the PayPal screens that whenever you see a link to Helvetas, you are actually brought back to our www.km4dev.org page