I added a few entries into the Learn & Play wiki without problems once I got my login information correct.
This "thing" has been a bit of challenge for the L&P Team as you see from the comments on the blog. I was able to get my login information quickly by asking for an account.
Once in, I was able to add my blog, favorite children's book, and favorite album. It was easy to do once I took time to look at the page and see the "edit" tab at the top. I like videos to help me learn so I've been looking on youtube. I didn't find any that I like so I email pbwiki directly.
Great customer service from pbwiki support. They quickly sent me a link for their video support page. Editing was the feature that I noticed was needed. That video is here.
Wikis could work.