I was using OSE to go through a competitor's link profile, and saw a decent directory, nice page authority, nice domain authority, so reached out to them.
They never added the link, but there was a "pay for featured link, 24 hr turnaround time" option, and I paid for it.
Pretty soon after the link went live, my site took a hit in visits.
Now, I know there's a million and one factors in SEO, so it's hard to know for sure, but is there any way google knows this kind of stuff?
It was this directory:
sitepromotiondirectory . com
It's a "featured" link.
Think I should disavow it? Leave it up and forget it?