| 2:52 pm on Oct 23, 2013 (gmt 0)|
I'd get him to block it as soon as possible. The first thing I do with dev sites is put a password on it. If his demo server in in GWT, then he should maybe take a look there too.
| 5:25 pm on Oct 23, 2013 (gmt 0)|
Thank you for your reply but what can happen if he doesn't block it ?
| 6:01 pm on Oct 23, 2013 (gmt 0)|
Lots of duplicate content. There's all kinds of ramifications from that (search here for duplicate content)
Basically, if he won't block it, then find another developer.
| 7:00 pm on Oct 23, 2013 (gmt 0)|
Aren't duplicate content issue when the domain name is the same?
In my case the domain name is different, there is mydomain.com and the developer.com/mydomain
| 8:06 pm on Oct 23, 2013 (gmt 0)|
No, duplicate content means duplicate content, regardless of domain. Seriously, get that other site blocked.
| 9:13 pm on Oct 23, 2013 (gmt 0)|
Essentially your site has been scraped. Although some say scrapers don't hurt your ranks in Google, they do. Get your designer to block the demo site and ask him/her to remove from Google's index with their webmaster tools account.
| 9:30 pm on Oct 23, 2013 (gmt 0)|
Regardless of what Google might say about duplicate content and filtering out dupes, I've seen it tank rankings on a number of occasions. I've been involved in a number of 'help! everything's gone wrong!' scenarios where the answer was a dupe copy of the website somewhere (either the client set it up with another developer, or on another domain, or a .co.uk instead of the .com or it was a dev site that wasn't blocked etc etc).
As others have said, do not take that risk. It's SO avoidable, and SO not worth it.