Wiki Spaces vs PBwiki

I am fairly new to pbwiki and am a first time user to wiki spaces so this comparison by no means will be as thorough as an experienced user. However, I will do my best to point out the similarities and differences among the two services.

Both offer:

• Free service for easily creating a wiki
  
• GUI toolbar interface
• WYSIWYG editing

Wiki Spaces

• I like the interface of this service much more and felt it had a greater selection of widgets you can add to a page. The pop-up window used for inserting the widget was also much more streamlined than the pbwiki interface.
• Provides a toolbar button that allows you to insert special characters
• Utilizes the wikitext markup language which can be difficult to understand.
  

PB Wiki

• Allows you to edit using HTML
• Provides additional services such as various levels of user access for a small monthly fee.