PBWiki

Description
Create wiki pages in this extensive community that has over 100,000 wiki pages and close to a million pages of user created content.

Cost
Free version includes unlimited pages and revisions, secure login, 10mb of storage, three templates to choose from, and RSS feeds. Update to Premium versions of PBWiki and additional features are available ($9.99 to 34.99 per month).

Ease of Use
This wiki is truly as easy as making a PB and J sandwich. For a basic account, the sign up is free. Quick, simple templates to start with (three templates are offered with the free version). Familiar, yet basic editing template to craft pages. Updating wiki pages is done with one click. For a tour of how to make a PB page click [|here].

Users
>
 * everyone and anyone

Uses
> >
 * coordinate and share projects
 * plan trips with family/ friends
 * information portals with photos, news and chats
 * teacher collaboration
 * online storage of texts

Features
>
 * 5000MB (5 gigabytes)
 * Choice: Make it public or private
 * Fully encrypted SSL access
 * Custom domains (http://wiki.myschool.edu/)
 * Gorgeous pre-made designs
 * Customizable CSS
 * Unlimited comments on every page
 * Lockable pages
 * RSS feeds
 * access controls
 * data is backed up hourly

Types of Memberships
__Silver Membership__ > > > > > > __Gold Membership__ > __Platinum Membership__ > > >
 * links to established wikis to use for ideas and examples //(Some of these features will need further explanation)//
 * acceptable use policy feature is useful for teachers
 * feeds for individual pages
 * full zip backup
 * ad free
 * access controls
 * hideable pages //(Some of these features will need further explanation)//
 * traffic statistics
 * lockable pages
 * customizable CSS
 * customizable favicon
 * domains
 * enterprise-grade Security features

Limitations
Basic program, advanced features cost more and are still limited. Program says it can be password protected, but I was able to chat with elementary students on teacher website. This is extremely unsafe.