unless they find the text file on your pc by scanning it.
Which they will, trust me.
Shoot, any program looking for passwords doesn't just check the files -- it also looks for deleted files, fill-data at the end of the last block of a file, and also scans the pagefile (swapfile) since that probably has a few pages of swapped memory that might contain a record of a password.
Consider this:
"...AccessData sells another program, Forensic Toolkit, that, among other things, scans a hard drive for every printable character string. It looks in documents, in the Registry, in e-mail, in swap files, in deleted space on the hard drive ... everywhere. And it creates a dictionary from that, and feeds it into PRTK. And PRTK breaks more than 50 percent of passwords from this dictionary alone."
That's from here: http://www.schneier.com/blog/archives/2007/01/choosing_secure.html a very interesting article on password security.
I use a Word document that has my names and passwords in it. I have over six lines of continuous random letters and numbers that contain my names and password strings. I highlight/copy what I need and paste to the cells as needed.
Even if someone had a copy of this list, it would take them 1.4 billion years to get into one account.