Has this happened to anyone else?
Yes, I have experienced this 2 times; Google is only a search engine and don't filter the results, obviously. About Falkag, I made a search about it months ago and - effectively - it provide many advertising services very dangerous. Solution (I apply this to prevent Google ads and other features, because it's very privacy-stealer): traceroute Falkag server; your will find a range of IPs; now set your firewall for blocking this list of IP addresses and you never will have advertising and other junk by Falkag. Using Firefox, you can try AdBlock to prevent banners and ads.