Note that all I stated above is correct. My advice it to delete all stolen content from your splog before the owners of that content file a DMCA complaint take down notice with your web host.

Citing the source is not helpful to those who created the content you stole. In fact it amounts to stealing their content and their traffic too.

Why the heck would anyone click the link and read the whole darn thing on the original sites if they just read it on the splog (spam you created? This very bad stuff you are into and it can have terrible consequences for you. Read the wordpress.com ToS and get with the program please before your blog is reported and deleted.

The convention regarding copyright is the same in cyberspace as it is in the print world. Whether or not the creator posts a copyright notice they own their intellectual work in its entirety. You may post only a brief quote attributing the correct author followed by a link to the original article and that's it. You cannot ever post a whole article without receiving the prior written permission of it's author and complying with their terms of use.