Here's an example of the default user comment which facebook share allows http://www.facebook.com/connect/prompt_feed.php?message=DefaultComment
This would appear in the text box. The user can change it if they wish. I would expect the orkut promote "uc" parameter to do the same. And it doesn't seem to be working from the past few months. This seems to be a bug -- You received this message because you are subscribed to the Google Groups "orkut Developer Forum" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/opensocial-orkut?hl=en.

