Is there a penalty if you have multi-URL's that point to 1 website. Could be 100 URL links pointing to 1 website.
Yep duplicate content for each URL. As far as I know google treats each url as a simple string without trying to work out any of the details behind it. So for example if you have http://test.com/test.html?1234 and http://test.com/test.html?1235 both displaying the same content, you will be punished. For a full discussion of it do a search for "canonical" URL problems.
there's a simple code that you could put on your webhost so that all non-www links go to www ones. Probably worth it to Google up the info.
I ve never had a problem repointing url's, its a different case if there is the same site content on each though.
if you mean a redirect , it's not a reason for banning but if you are using the same content on 100 web sites, you have to worry
What if its a re-direct... So say bluewidget.com redwidget.com pinkwidget.com all re-directed to... widgetsrus.com Would this be classed as dupe? Not a JS redirect, something serverside, say that you do where the domain is parked.
This is exactly what I am talking about. 100 URL.com's re-directed or forwarded to 1 URL that has content. Will I get banned from the SE, that is my concern
This is precisely what gets you a Google penalty. What bugs me is you may not have a malicious intent. For instance, you are trying to consolidate other URLs to a single website, to save yourself headache in managing all these URLs (which may still get traffic). Yet... Google calls it spamming the index or Google bombing. So, guess what, they penalize your website and bounce you from the index. I think you MUST do a 301-redirect to get around this. Google is very picky about this.
from what i understand , re directing or pointing , is different from making different websites with the same content. but a 100 domains , is a little too much i think.