Really, the idea that R2105 (The Map of Agora) has been a traditional target of scamsters is a bit exaggerated. Here's the full history.
The map was created by Maud's proposal 4735. This wasn't the result of a scam or anything, but people were itching a bit for a map, and voters liked the proposal. Sherlock's proposal 4807 added the whale and the names of Sherlock, Goethe, and Manu. Back then, ordinary proposals were much more limited in terms of who could vote on them at the time, and they happened to be the eligible voters at the time. There wasn't an actual scam involved as far as I can recall. Manu's proposal 4821, "PH'NGLUI" attempted to replace the whale with R'lyeh, but failed. Oscar's Mire was added as a gratuitous side effect of Goethe's Proposal 4866, the large repeal proposal of 2006. And the last proposal to amend the rule's text was Zefram's Proposal 4946, which merely fiddled with the formatting. -root