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topr8 - 8:23 pm on Feb 7, 2013 (gmt 0)
... right now i'd just remove the link and link elsewhere - and i do run a few of the kind of sites that link out a lot - not because i care about having a few links disavowed (quite honestly most webmasters don't even know what that is) but because receiving an email like that would put the hackles on my back up.
which isn't to say that if enough people did it the whole landscape would change, then i'd rethink.
however $5 dollars is a lot, when i write a researched article (which isn't every day) i could easily have 10+ outgoing links as references or further reading, there is no way i'd pay $50 just to publish an article on my own site!