RPG World/YMMV

Archive Binge / Archive Trawl - what happens to most people who stumble across the comic, and what devoted fans of it did for years, and still do on occasion.
Ascended Extra - "Olaf The Unstoppable" appeared early on, apparently as a throwaway villain. About 400 comics later he appears as quite a formidable foe to the heroes during their raid on South Corp. Whether or not Ian planned this for him all along is not clear.
Anvilicious - Mocked when the party fought a Marlboro (a recurring Final Fantasy monster that attacked with bad breath). This one wore a cowboy hat, smoked cigarettes and died of cancer mid-battle.
Badass Decay - Jeff seems to suffer from this, as he gets one-upped and humiliated at Galgarion at every turn. Though this may be just to prove Galgarion DOES deserve the name of Big Bad. Or obfuscating wussiness on Jeff's part...
Crowning Music of Awesome - The "Unlikely Heroes" fansong.
Fan Dumb / Fan Hater - RPG World had one of the most malicious fandoms ever, to the point that you literally couldn't tell the fans from the trolls. The regulars turned the official RPG World forums into a wasteland and attacked anyone who tried to discuss the comic. After the hiatus began they started hunting down other works of Ian J.'s to make fun of. Ian eventually nuked the forum and posted a Take That towards them, which included the statement "I don't owe you anything".
- It's important to note that this only happened after Ian abandoned the comic. A good, strong fan community had formed, and suddenly found itself without anything on-topic to discuss. Between that, Ian's outright hostility towards the community, and his appointing of a handful of known trolls as mods... it's not like it could have ended up any other way. In fact, it's pretty clear that the toxicity bred in the fandom was exactly the way the comic's creator wanted it.
Money, Dear Boy: Outside of the creator's newfound love for random events humor over a structured story, RPG World may have died due to being caught up in a dispute over creative rights. Namely, the fact that Jones probably wouldn't have had any due to the fact that Keenspot turned into a full-fledged publishing house towards the end of the comic's life.
Moral Event Horizon: Some would argue that Galgarion crossed it when he killed Reika. They would be wrong. It's when he boasted about how he murdered Evil Soldier #347's wife with a weapon that is powered by souls, and can either cause 9999 damage, instant death, or slow agonizing death, depending on the situation. If you thought that he was misunderstood, only Affably Evil, or anything other than a Complete Monster, well, guess what: you're kidding yourself.