a blog is continuously copying content from 7-8 sites when we make a post he copy it word to word and doesnt trackback.... and so its affecting the traffic i get ..... what can i do
This plug-in might help if you are being scraped via RSS (and sounds as if you are) http://www.quickonlinetips.com/archives/simple-feed-copyright-wordpress-plugin/ If the offense continues, you can file a complaint to their host (find this using whois) and they will be likely to shut the site down. And it's a "cease-and-desist"...but it has very little legal force unless you are prepared to take the case to court.
send a mail directly to his hosting company. contact his blog subscribers and inform them about this theft. make comments in his blog posts (you know what to write). There is a lot you can do to such cheaters.
Send an DMCA notice to his host to suspend his account, if he is using Adsense, send a DMCA notice to them to suspend his account.
One other angle on this... maybe pretty esoteric... Somebody who's plagarizing your content is also doing other crumby stuff. And a little digging on your part can probably help you discover that other dirt. Once you know that, you can maybe get some additional help. Example: I'm a CPA out in Seattle. And for a CPA I have a pretty good site. So some bozo in West Virginia copied the entire site--maybe 500 pages?--replacing his name with my name. I wrote QuickBooks for Dummies and Quicken for Dummies so as promo tricks, I give those away to new clients... this dork was even offering to do that. Anyway, I poked around and learned the guy wasn't a CPA... he was only pretending to me. So I alerted the West Virginia State Board of Accountancy. They went after him. Told all the accountants in his town that he'd been pretending to be a CPA but wasn't. (Man, that couldn't have helped his marketing efforts.) You might pretty easily be able to find some similar gamut in your case. BTW, I tried the DMCA stuff per the Google procedures... that was pretty unsatisfactory... As I recall, you basically need to give them search arguments that led to his page... and they'll sort of cross him off the list... Kind of impractical.