This probebly should go into the developer ideas because it's coming from me. but I'd like a little input as well.
Post Linking works well for version 4.0.2 when posting from the blog to the forum, but sometimes I just cant be bothered by slow web connections or finding an interweb connection when I'm on the road. During those times I am mobi-blogging there is no easy way for me to add my mobi-post to the forums for open discussion. You have to be on the post screen in the wordpress backend to set the link option.
Using the post link option uses a web form which is only accessable from the post edit screen, but the post linking function of SPF sets a custom feild in my postmeta data, which can be set or unset anywhere, even with remote publishing items such as posting by email or using XMLRPC tools such as Windows Live Writer or Ecto for MacOSX.
Is it at all possible to set an optional trigger to the post linking function, such that when the filter is called, that it checks first for the PHP $POST variables to create the link, and then also looks for a similar set of POSTMETA values (temporary) to trigger the same process (but only if the $POST values arent there)?
If this were possible, people like myself would be able to use Ecto or Live Writer to set the linking option into effect when posting remotely and cant get to the wordpress backend.