Hopefully you won't mind some dos & don'ts from someone who deals with issues like this on a daily basis...

1)Don't bother contacting the person who owns the webpage/group/community that is stealing your work. 99% of the time this will be a fruitless & ultimately frustrating experience. All webhosts/ISPs/hosting communities must have a copyright agent whose job is to act on official complaints of infringement. The US Copyright Office maintains an alphabetized list of online agents at... http://www.copyright.gov/onlinesp/list/index.html (Note: it requires Acrobat Reader to view)

2. Don't write your initial email in anger. The copyright agent you are contacting is someone you want help from. Yelling at them is not the best way to go about it.

3. Don't write on behalf of someone else unless you have their permission. As well meaning as your attempt may be, all it does is slow down the system. By law the material can only be removed if an official DMCA claim of copyright infringement is received from the original copyright holder or an authorized agent acting on their behalf.

4. Do make certain the your complaint is in the proper format. Most of your complaints will fall under the DMCA (Digital Millenium Copyright Act) & it is very specific in the information that is required.

Information that must be included in a claim of copyright under the DMCA

1. A physical or electronic signature of a person authorized to act on behalf of the owner of an exclusive right that is allegedly infringed;

2. Identification of the copyrighted work claimed to have been infringed, or, if multiple copyrighted works are covered by a single notification, a representative list of such workss.

3. Identification of the material that is claimed to be infringing or to be the subject of infringing activity, and that is to be removed, or access to which is to be disabled, and information reasonably sufficient to permit location of the material;

4. Information reasonably sufficient to permit contact of the complaining party, such as an address, telephone number, and, if available, an e-mail address where the complaining party may be contacted;

5. A statement that the complaining party has a good faith belief that use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law; and,

6. A statement that the information in the notification is accurate and, under penalty of perjury, that the complaining party is authorized to act on behalf of the owner of an exclusive right that is allegedly infringed.

7. Do be brief. Understand that the person you are contacting probably has to deal with hundreds of emails in an average day.Extranneous details again just slow them down in doing their job.

8. Do follow up. In order to avoid liability a host must "expeditiously" remove the offending material from public access. Generally I will allow two full business days after my initial email & then will send a second inquiry. If I don't see any action after that I will use the phone number which is also provided at the online agents directory & see if I can speed things along.

If anyone has any additional questions feel free to ask, either here or privately.