Just want to let you guys know that one of my sites got a manual action for using this script!! I installed it on two sites - both of these sites were in google webmaster tools - and on one of them, few days after installation the site got completely de-indexed and I got message in WMT saying there was a problem with the sites content which meant they had to remove from index.
I have not done anything else on the site recently and because it specifically mentioned problem on the site (rather than backlink profile) I assumed it was this code.
I removed code and resubmitted the site - which had to be manually reviewed, and now they accepted my re-submission and re-indexed the site.
The turn around time for this manual review was 17 days.
I didnt get any issues with the other site to which I added this code (But still I removed it after the above issue). So I dont know if perhaps somebody manually reported me or what, but regardless I am avoiding this code from now onwards.