In recent weeks, I've seen an influx of links being registered in GWT. This coincides with weaker rankings for the sites in question. Sites that have previously had around 600 links registered now have 900, sites that hade around 300 now have 500. I suspect it has to do with https://support.google.com/webmasters/answer/6211453 - My question is, have you noticed anything similar and how do you go about these links? Many of them seem weak and dangerous, so I decided to disavow around 100 of them.