The plugin still works mostly on the latest version IMHO. Though it has not been updated in a long while. I do have issues with the footer not being parsed despite the correct footer php code being active. I tried this with other themes, too. All reported the same errors... Moreover, non-payment by Linkworth for previous advertising suggests that Linkworth is having 'issues'. I would suggest that those looking for advertising income look for recently updated plugins with active partners who respond to client emails.