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So proxify("http://example.org/myservice/")
results in a URL like http://my.wookie.org/proxy?url=http://example.org/myservice/&api_key=myapikey
Shindig also uses the same method for OpenSocial applications, and has its own bundled proxy service.
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Other browsers should be unaffected by this issue.
Why when I update my widget and load it back onto wookie do I get two copies of my widget in the gallery?
If your widget does not have an id defined in the widget's config.xml file or the id is not a valid URI then wookie will load but not update your widget. If this is the case then (for the moment) you will need to manually remove the old version of the widget using wookie's admin page.