I created one of these today

http://plugins.b2evolution.net/index.php/2011/09/23/stop_forum_spam

JRawly wrote:

I created one of these today

http://plugins.b2evolution.net/index.php/2011/09/23/stop_forum_spam

http://www.stopforumspam.com/contributions
tells that

[url=http://www.vbulletin.org/forum/showthread.php?t=176481]vbStopForumSpam[/url] by pedigree (vB 3.6-3.8, 4.0) no longer in development

While the plugin is probably under GPL, the reason that other developers don't continue its development that authorship and ownership remain with original author.

Will you waive yours in case you stop tp develop it?

TBH - you can block all spammy address from your hosting, it's quite nice :)