Recent changes to the pbwiki 2.0 api have created a secure way to allow anyone to get editor access to your wiki without compromising your admin security. This should be a sufficient replacement for public 1.0 wikis that published their invite key.
Ok.. here's the source code you should add if you want to create a user signup page on your 2.0 wiki:
<div id="admin_key" style="visibility: hidden">YOUR_ADMIN_KEY_GOES_HERE</div>
<p><img class="pluginslug" contenteditable="false" src="/plugin_helper.php?plugin=googlegadget&html=%3Cscript+src%3D%27http%3A%2F%2Fcopytest3.pbwiki.com%2Ff%2Fsignup.js%27%3E%3C%2Fscript%3E&w=200&h=50" isapbwikiplugin="1" /></p>
Here's a demo if you want to see it in action:
http://copytest2.pbwiki.com/signup
Here's what you need to do in order to use this script on your wiki:
http://yourwiki.pbwiki.com/api_v2/#Ad...
click the [show] that's next to
opkey_adduser_edit on that page....
Don't be afraid of all the programmer speak on the page, it will not harm you.
Copy the magic code that it reveals for you into the YOUR_ADMIN_KEY_GOES_HERE from the snippet above