Did as you suggested songdogtech and you’re right, it’s not the plugin. I thought it was because that’s where the the dodgy link appears. Incidentally, the link has now changed to some rubbish “shemale” crap, so there’s definitely something wrong with the theme, I think. I’m having a look at it now (it’s a custom theme), but as I’m not tech-minded, I’ll muddle through until I find it.