PSKL.us wrote a blog post on how they received a DMCA takedown request over a link in a positive review.
It has come to our attention that your website or website hosted by your company contains links to LifeShield, Inc website (www.lifeshield.com) which results in financial losses by the company we represent, because of search engine penalties.
I request you to remove from following website (pskl.us)
all links to www.lifeshield.com website as soon as possible.
In order to find the links please do the following:
1) If this is an online website directory, use directory’s search system to find “LifeShield” links.
2) If there are hidden links in the source code of website, open website’s main page and view its source code. Search for “lifeshield.com” in the source code and you will see hidden links.
I have a good faith belief that use of the material in the manner complained of is not authorized by LifeShield, Inc, its agents, or the law. Therefore, this letter is an official notification to effect removal of the detected infringement listed in this letter.
I further declare under penalty of perjury that I am authorized to act on behalf of copyright holder and that the information in this letter is accurate.
Please, inform me within 48 hours of the results of your actions. Otherwise we will be forced to contact your ISP.
LifeShield, Inc will be perusing legal action if the webmaster does not remove the referenced link within 48 hours.
LifeShield, Inc will be forced to include the hosting company in the suite for trademark infringement.
The author details very specifically his back and forth with Life Shield and it makes for a very interesting read.
This could be another thing website owners have to deal with as a result of the Penguin update that Google recently made.
Using DMCA notices is certainly not the way to go about getting links removed but some may use it as a way to get things done faster than doing it the right way.