For example?
One example would be the person who left a donation in the name of Isabel Duarte. Another would be the person who signed themselves MPS and claimed that "a large number" of police officers had had a whip round and raised £1,000. Plenty more examples would be those (often anonymous donors) with a PREFERENCE for leaving messages propagating all the usual MYTHS and LIES associated with this case and DOING so with a plethora of ANGRY capital letters and EXCLAMATION MARKS!!!!
I guess it depends though on your definition of "sick troll". I think there is something quite sick about the concerted and determined effort to cause the McCanns as much hurt as possible, which - let's be honest - is what this fund raising campaign is really all about. You can dress it up as a "crusade for justice" by lovely decent people as much as you like, but in my opinion there is something both sick and trollish about supporting a man legally adjudged to have caused damage to the parents of a missing child. But then there have been all sorts of movements and campaigns that have attracted wide support that I have struggled to understand - at one point (for example) the BNP had close to 12,000 fully paid up members for example, and they used to have a huge upsurge of donations every time the MSM reported another Nick Griffin racist remark, arrest or thuggish debacle - I guess throwing your support behind causes and individuals like this is a way of snubbing your nose at the establishment, all very British I'm sure!