Y'know how Brave New World (the sequel fic) is on hiatus?
Well, Ri2 said he'd get back to it after finishing Sonic Origins...

Which just wrapped up this week. So, there's that to consider.

Speaking on the second matter, I'm surprised Sweet Apple Massacre wasn't already on the list.

One from Naruto:

Chunin Exam Day seems like a pretty good candidate. Published between 2007 and 2010 and still heavily referenced on various sites within the last year, it fits all the qualifications for a Legendary.

As for the fic itself: Naruto gets stuck in a Groundhog Day loop and quickly uses it to start winning over (romantically) all the ladies with massages and simple gifts. This includes adult women. He also uses it to make himself incredibly overpowered. All good characterization is tossed out the window immediately so Author tracts can begin, and the fic is just awful.

The Tropes page, with a link to the fic:
http://tvtropes.org/pmwiki/pmwiki.php/FanFic/ChuninExamDay

The other three are from Harry Potter:

The first of the three is Partially Kissed Hero. Started in 2008 and finished in 2012, it is a little less mentioned in the last year. However, it has been very well known, and is by the same author as Chunin Exam Day.

The Fic starts with Harry getting partially kissed by a Dementor, which destroys the Horcrux inside him. However, the story rapidly goes off the rails, with multiple brutal deaths to characters like Dumbledore and Snape for no real reason. The attitudes towards women are the same in the previous fic, and Harry rapidly amasses a large Harem of basically every attractive female character. The plot also rapidly goes more insane, mostly due to Harry spiraling into darkness in a way that is entirely meant to be considered Protagonist-worthy.

The Tropes page is here, with a link to the fic.
http://tvtropes.org/pmwiki/pmwiki.php/FanFic/PartiallyKissedHero

The third fic is the rather famous HHHHHHHHHHHHHHHHHHHHHHHHHHHHHH, or Thirty Hs. Still rather talked about in the same terms as My Immortal, this fic is still rather talked about with hundreds of hits for either version of the name. It was originally made in 2005, with a recent set of edits in 2015. Like the others, it has a Tropes page, and definitely qualifies for Legendary as far as I can tell.

To quote the Trope page:
It's a Harry Potter fanfic, just like My Immortal. It's So Bad, It's Good, just like My Immortal, it has extreme Canon Defilement, just like My Immortal. However, the two are different in one key detail: whereas My Immortal was (ostensibly) written by a Wangsty 13 year old girl, this was (ostensibly) written by an Ax-Crazy 13 year old boy.

The Tropes page itself, with the fic link:
http://tvtropes.org/pmwiki/pmwiki.php/Fanfic/ThirtyHs

The final fic I'm nominating is Harry Potter and the Methods of Rationality. This one is the one that fits the least of the requirements. First published in 2010, and completed in 2015, the fic has quite a cult following and a TV Tropes article. The fic itself is quite divisive, with a very 'love it or hate it' attitude among readers.

The fic itself starts with a simple premise: Petunia married a scientist. Now Rationalist!Harry enters the wizarding world armed with Enlightenment ideals and the experimental spirit. Very quickly, Harry becomes a massive Sue, with both his and the rest of the cast being warped to fit into the author's philosophy, which is stated repeatedly in the fic in massive author tracts. Enormous chunks of canon are altered or ignored to make the story fit, to the point of making Lily try to murder Voldemort with the Killing Curse or having Voldemort make hundreds of Horcruxes because he's clever. I'm gonna stop there because there is a lot wrong with this fic.

Tropes page is here, with the link:
http://tvtropes.org/pmwiki/pmwiki.php/FanFic/HarryPotterAndTheMethodsOfRationality

I've suggested My Little Unicorn and The Conversion Bureau as potential legendary badfics, but that seemed to peter off.

This is horrific, also, Orks are sexless animal/fungus hybrids which reproduce by sending spores into the air. I don't think they have penises.

But yeah, almost certainly a troll. The content is repugnant, let's get that right, but the writing is hilarious. Just one non-explicit quote: He grunted furiously, screaming "!" in his deep orkish voice. Screaming "!". *snerk* Also, that second chapter. What? {X D

It seems to fit the same general category as "C*l*br**n." I have no objection to this being added to the list.

(Trivia: I somehow managed to read the title of the fic as "Squid Broken" up until actually clicking the link and seeing it on ff.n. I am shocked to realize my eyes were lying to me the whole time, relieved there were no squids involved, and concerned that some part of my brain expected them.)

~Neshomeh lost her innocence a long time ago.

I'm a little unsure as to whether it still meets the required "five in twenty" Google hits for the past year, since a lot of the returns are Know Your Meme and various video hosting sites that seem to contain the fanime? I think there are still sufficient hits of people talking about it, but you have to go back a few pages to find them in all the garbage.

I don't need this to be acknowledged to stoke my ego or anything—I've waited this long, it won't change my life one way or the other—but maybe it's a good test case?

~Neshomeh