Why would they mention smalltalk? The article is framed from the writer's specific experience with both languages, not as a historical deep dive into the progenitors of Objective-C.
Granted these historical details are super interesting, but feels far from the intent of the article.
> As a simple solution, one could pass a signed auth-hash of the fields generated by form_for, and the server could re-hash the fields submitted to ensure the form data you asked for is what you get (this solves the primary issue with attr_accessible).
It does not solve the issue of javascript generated forms.
A better solution would be to just use Observers. One for email, one for twitter. The user shouldn't care about how to talk with these services.
+1 don't worry I'm patting myself on the back right now.
Swing and a miss
Am I missing something? Just install gitosis and save yourself the $600/user/year