Confused about the disavow file?

So the first thing this morning I was asked about was the correct format of a disavow file, as there are many views on this. Nothing new had come out of Google since the last Penguin Update but a few people have said that “They had just got out of a Partial Penalty only to be wiped out in the last Penguin Update” , we even wrote about this here.

And I can see where the confusion can start in this blog post : http://googlewebmastercentral.blogspot.co.uk/2012/10/a-new-tool-to-disavow-links.html 

The last 2 points made me scratch my head a little :

So if I had a Link on uk.example.com/articles/seo-is-dead-because-google-made-it-to easy.html

would my disavow file just have :

uk.example.com/articles/seo-is-dead-because-google-made-it-to easy.html

My gut feeling is that this should be enough, if I know that it’s the only article that was ever put on that site. But I bet Google will find another way to index the link, what if the link was the first thing in the article and uk.example.com is a badly set up wordpress blog with urls like

uk.example.com/articles/ ( the snippet had the link )

uk.example.com/2013/ ( the snippet had the link )

uk.example.com/articles/seo-is-dead-because-google-made-it-to easy.html?replytocom=7062 ( seen these appear all the time)

So would it be better to :

domain:uk.example.com ( but in the article Google said “But if you list a subdomain, most of the time we will be able to ignore links only from that subdomain” ) MOST of the time !!!, what if you had a link on www.example.com and you actually wanted to keep that link but adding uk.example.com may or may not discount that link so I guess  it’s better to just block :

domain:example.com  or maybe your disavow file should just read :

# link we don’t want because we paid uk.example.com for this article
uk.example.com/articles/seo-is-dead-because-google-made-it-to easy.html

# actually belts and braces I noticed that they have dupe content
domain:uk.example.com

# actually I have 100,000’s of links to look at and why am I wasting my time on just one
domain:example.com

maybe Uli knows the answer : https://plus.google.com/u/0/100370036835775851472

and while we are asking him maybe we should ask about the upcoming NIC.UK changes that will allow domains like example.uk to live alongside the domain example.co.uk. Will Google see example.co.uk as a subdomain of co.uk and what  about www.co.uk so many questions and only one disavow file, maybe the disavow file should read :

# I don’t like links from russia or china
domain:.ru
domain:.cn

or Maybe Google should just give us a disavow testing tool