Since Ning exhibits such poor business practices (http://www.chartingstocks.net/2009/03/ning-exposed-tech-company-ning-scams-its-clients/), I’m really glad we didn’t have to sign up for an account. I logged on and explored the site as directed, but didn’t find any unique features to recommend it. I am enrolled in several Yahoo! groups which allow e-mail communication post-by-post or through digests. Users can (and do) post pictures galore, and other features are offered. I’ll stick with Yahoo! groups.
The scores for Ning on Web2Access (http://www.web2access.org.uk/product/145/) ranged from 70% for those with blindness/severe visual impairments, to 78% for those with partial visual acuity, with a similar 78% score for those with issues with visual stress. Unfortunately, its login uses Captcha.