Reference Guide

facebook FBML Reference Guide Page 27 of 159

Check Out Application

</fb:profile-action>

</fb:else>

</fb:visible-to-user>

Notes

Use profile.setFBML to add the button to a user's profile.

If you add this to the profile of a user who has not added your application, it will appear only to those

users who have added your application. By setting the default FBML (in Edit Settings, under My

Applications) to include an fb:profile-action, this action appears on every profile the user of your

application sees.

There is a limit of about 30 characters in the action label. (Note: Leading and trailing white-space counts

against this limit, so if your link is being elided, check for and remove any extra spaces between the tags

and the label text.)

For users for whom you have not called profile.setFBML, the actions are read from the content in

"Default FBML" section of your application settings. For the most part, this applies to any user who has

not added your application.

For users for whom you have called profile.setFBML, the actions are read from whatever content you

set when you last called profile.setFBML for that user.

Example: There are three friends -- Larry, Curly and Moe. Both Larry and Curly add your application.

When Larry views Curly’s profile, the profile actions that Larry sees on Curly’s profile come from the

content you posted to Curly’s profile. When Larry views Moe’s profile, the profile actions Larry sees on

Moe’s profile come from the default FBML content, because you haven’t called profile.setFBML on

Moe, because you don’t necessarily know he exists