Forum Moderators: open
What should I do?
edit :
I just made a one letter change in the index page and this also appeared on the mirror, so it is somehow getting all the new data. What is going on? Needless to say, I am a bit worried about this.
Your best bet is to contact the owner and tell me *no*.
P.S.. Like Marcia said: Did you find out who owns that other domain name?
The site is owned by...us.
Registered to the owner of the company, since before I was working here. So I guess I should ask him about it. I have never seen it before though, odd. All PR is grey on the google toolbar, which makes sense, as it would have no links, not submitted to any directory, it's like a ghost of our real page. Hope the boss knows how to get rid of it.
In another sense, you are publishing duplicate content on the Web. There are multiple URLs serving the same content, and as most sites use name based hosting (where requests to the same IP address but with different 'host' headers get different content) they will be spidered separately if they're linked to.
Google deals very well with duplicate content, merging the records in their index. Only one URL is kept (probably the one with highest PageRank), and that URL gets the backlinks (and PageRank) from both URLs. If Google get slightly different content (maybe because the page has changed between the time that Googlebot accessed the two URLs) then they are likely to be listed separately, splitting the PageRank.
Personally, I'd rather have the host issue an HTTP status 301 redirect to the main domain if another domain is accessed (the process depends on your Web server). That way, Google doesn't need to crawl both sets of addresses.