I have been doing scrapebox commenting blasts for a while now but have never had this response before. Stupidly I decided to use the commenting feature for one of my clients who has a legitimate business in the UK. I first got all the linkdomain: links from the top 100 searches for my keyword and ended up with about 120,000 BL. After removing duplicates and filtering out the WP blogs I had a bout 9,000 successful comments. All the comments were positive non spammy looking but where obviously generic. This morning my client has been called twice from competitors here in the UK and received 5 really nasty emails. Needless to say they are totally pissed off with me and have asked me to stop whatever it is I am doing. I just hope that they don't get any more calls or emails! When I started doing work for this client they were no-where to be found in SERPS - now they are ranking page 1 for 6 of their keywords! and the blast that I did was for a keyword they are currently on page 2. Up til now they thought I was doing a brilliant job. I know I have been stupid but I hope this sends a bit of a warning out to others who do work on behalf of clients.