[twitter-dev] POST :user/lists

I'd like some help as I implement and test the API methods, of which there are dozens. For example, the create list method, titled POST :user/lists on dev.twitter.com, shows the URL endpoint as: http://api.twitter.com/version/:user/lists.format I am not familiar with the notation :user but from

[twitter-dev] POST /:user/lists succeeds but returns twitter error page

Hi everyone I'm integrating the LISTS methods to my as3 library at the moment and noticed that updating a list works but will return the twitter error page (you know: Something is technically wrong.. blah blah). Thought i'd let you guys know :)