Now that you know you've been blogiarized, what do you do about it? The last thing you should do is walk away and do nothing. Inaction will only mean more blogiarism and splogs in the future. It's simply a matter of speaking up and telling the right people about the blogiarism or splog. Let me tell you the ways I've used successfully in the past to combat blogiarism and splogs. Start by finding out who this guy is working with. You see, if he has AdSense ads, a FeedBurner feed, a blog hosting service or a Web hosting service, then you can usually go right after his partners and hit him where it hurts. Send them an email complaint. For some services, there are specific ways of contacting the right people. Let me enumerate them.

AdSense

Many blogiarizers or sploggers use AdSense as a way of monetizing their efforts. There's two primary ways of inappropriate blogs to the AdSense team.

1. Click on the Ads by Google link in the margins of the AdSense ad unit. This will bring you to a page with a link "Send Google your thoughts on the ads you just saw."  The content of this page changes from time-to-time, so this link may disappear. Click this link or one similar to it. You are then presented with a feedback form where you can tell Google that the publisher is a splogger or blogiarizer. If he gets enough submissions, then his AdSense account will be terminated and this does happen quite frequently.
2. The second option is to send and email to adsense-abuse@google.com with all the pertinent information included in the body of the message.

The first two steps failing (too often the case), I have found that Jason Goldman is a good contact on the AdSense team.

Yahoo! Publishers Network

Very similar to AdSense, some sploggers attempt to make their money using Yahoo! Publishers Network. Splogging is against many of the subsections of section 6, Members Conduct, of the YPN Terms of Service. The TOS says to report these abuses to Yahoo!'s Customer Care, but I can't find anything on that page that helps you report YPN splogs. Yahoo! must fix this.

FeedBurner

Some blogiarizers and sploggers, go to the extent of publishing a FeedBurner feed on their blog. You can report them to feedback@feedburner.com. I've done this in the past and the blog (not just the feed) actually disappeared within the hour. The blog may have disappeared for other reasons, but it's worth pointing out, even if it's a coincidence.

Blogspot

Most splogs are hosted on Google's blog hosting service called Blogspot. Each Blogspot blog is suppose to have a Flag button in the top right corner of each blog page. This is not always true and there are likely two reasons for this.

1. The author maybe adding script to his blog to disable the button or the entire Blogger bar.
2. Maybe Google removes the Flag button when the blog meets some criteria (it's about to be deleted).

Google

You can also try to get splogs de-indexed from Google. Remember, Google is every Webmasters best friend. Getting a splog removed from Google's index should have a severe negative effect on the splog traffic. Here's one way of reporter a splog. Type the URL of the splog preceded by the modifier "site:" (example site:www.the-splog-url.com/page) then hit enter. Then scroll to the bottom of the page and click-on "Dissatisfied? Help us improve." You are then presented with a form where you can give Google the appropriate feedback.

Another secondary approach is to contact Matt Cutts. On numerous occasions, I've sent Matt lists of splogs, which he quickly removed from Google's index and forward to other appropriate Google teams. Matt is likely the #1 warrior in the fight against SERP (Search Engine Result Page) Spam. Thanks Matt!

SplogSpot

Another way of telling the world about a splogger, is to list his Website at SplogSpot.com. SplogSpot has a difficult submission form, the CAPTCHA is a killer, but if you can bypass it then you are a smart human and your submission will be reviewed for inclusion in the SplogSpot database.