Today, vb reported on the Drupal Forums, the SMF Forums and on his own website that he will no longer maintain the Drupal SMFforum Integration module.

According to vb, SMF's Project Manager Michael "Oldiesmann" Eshom told him he was in violation of SMF's proprietary license because he failed to obtain SMF's permission to distribute or change a file named smf_api_subs.php containing SMF functions, some of which had been modified to work with Drupal.

...

Sadly, this story is far from over. I think SMF is starting to realize they are in a bit of a pickle. There are dozens of other SMF bridges leading into GPL environments that have been initiated, discussed and distributed (by sharing links) right inside of the SMF forums in the *exact* same way the Drupal bridge was done.

Sounds like an awful lot of foot shooting going on.