Could domain aliases drop traffic on the main domain

Could .org, .co.uk, .us, .net, .biz dop traffic on .com

[AlexB77]

Hi Guys,

I have already had a question asked about redirection from the domain aliases to the main domain here previously, but here is some stats:

in last seven days before registration of this new domain aliases 42000 out of which 22000 was US traffic from Google,

in last seven days after registration of this domain aliases 26000 out of which 11000 was US traffic from Google
other engines seems to be pretty much the same as it was.

Now the question could this be down to the registration of this new aliases?

[bwnbwn]

Just registering the domain in another aliases no.

[AlexB77]

Then how to explain loss of traffic only from US and only from google in 2 days for main keywords from 7th and 8th of march. any Ideas or suggestions would appreciated. just to say I first thought that thismay be down to registering .co.uk domain as an alias on the 5th of march

[bwnbwn]

One word "Panda"
[webmasterworld.com...]

[AlexB77]

Even if I have only had a hand written quite valuable original content? This is not right.

[bwnbwn]

AlexB77 all I can suggest is read the thread and step back take a hard look at your site. We all feel our content is valuable. Who does the writing of the articles, are they checked out for being copied, and is the material really valuable.
Just sounds like what is going on with your traffic sure isn't becaues you bought some domain extensions I am sure of that.