Well seeing that many wanted a tool to work url variations easily defined by you....eg
//ww.google.c?
w.google.
44.google.22
.ww.google.c7
www.google.com
88ooglethis
www.google.net
I came up with a really easy to use excel spread sheet that should make life super easy....
see the video below.....
here is a screenshot cuz Mr. Green doesn't like the "talkies"

its really very simple and easy to use.....it will take you some time to set it up the first time....but once setup it makes life very very easy....
here is the download link http://dl.dropbox.com/u/10413262/excel_strings2.xls I did protect the worksheet.....stm is the password
Please give the Unicorn some love
extra thanks mean more cool stuff like this.....
Those "88" and stuff that you have there are just random examples to explain the theory, or do they actually work? Just wondering if I'm missing out on something 
Nice work bacon!
Looks handy. On a related note: do you know how Lead Impact does its url matching? Does it always try to match the longest string with the highest bid?
Example: say I'm bidding on domain.com, domain.c and domain.com/innerpage. User enters 'domain.com' in his address bar. All bids being equal, will this match domain.com or domain.c? Reason I'm asking is that I'm seeing both show up in prosper (domain.com vs domain.c) and I'm not entirely sure how this is happening (both have the same bid price and I'm the highest bidder).
Would adding long tail urls (domain.com/innerpage) allow me to pinpoint the converting ones within that domain?
How do i add my keyword without retyping all the excel code? If i type in a different url then it deletes the excel coding, also how to do it with multiple domains in bulk? Bit confused on this but I do see potential 

Here are some other equations (using the SUBSTITUTE function) you can throw at a target URL to get variations:
=LOWER(SUBSTITUTE(A1,".","*"))&"/"
="."&LOWER(SUBSTITUTE(A1,".","*"))
="."&LOWER(SUBSTITUTE(A1,".","*"))&"/"
=LOWER(SUBSTITUTE(A1,"."," "))
=LOWER(SUBSTITUTE(A1,".",""))
You get the point . . . so TRY IT! 
i have an executable program that i wrote a while back that does pretty much the same thing as this, for anyone who prefers to use a desktop program instead of excel.
if there is interest ill put it up on filehost somewhere or can post it here directly if its allowed
P.S. not trying to hijack the thread, hope no one takes it as such, just offering an alternative for those without a spreadsheet software.
i mean no disrespect to you polarbacon, and no attempt to take away any credit for your share
Wow are you Fing kidding me? I was seriously doing this on my own and I found this while researching for the task.
NICE
Dude that is friking sick I just saw this now!