Well, currently, Wiktionary isn't doing so well. It has only 3447 entries, far too few for a real refrence dictionary. And the textbook project hasn't even started.
I personally dont use Wiktionary but would see more use in it if it were more unified with WP. If there were an easy way to write a quick definition for a word I use in an article, for example a scientific term, and put it in the Wiktionary instead of starting a stub article on the WP. Maybe a command that would formulate a Wiktionary hyperlink easily like we have for within WP ...
Karl
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