[wp-forums] self-linking rules?

[Mark Ratledge]

Are there codified or generally agreed-to rules for self-linking in posts? Is it OK to link to your own site for an article to help someone in the forums? Or no?

http://wordpress.org/support/profile/woodent   is linking to his own site articles in this thread  http://wordpress.org/support/topic/permalinks-and-indexing-google?replies=3

I don't see any more than that one. He's not trolling and is helpful....