What's the most annoying ou infuriating ability you've seen on animé fan sites?

Generalized elemental manipulation.

Now hear me out. I don't dislike controlling the elements on its own. In fact, when properly done, such abilities are among the most versatile and easily applicable. But people sometimes rarely think that through and just use generic abilities to control the elements, such as a lighting user who hurls overpowered lightning bolts everywhere, ou a feu user who fires jets of flames without limit.

My main problem is that, not only can that easily become overpowered, a human being can't handle that kind of energy being expelled without restraint. Basically, limits and details are important. How does the user avoid frying themselves? How can they use such abilities that would take up so much energy, a human being would burn out within a minute?

But mostly, it annoys me that they ignore the other aspect the elements can grant. One who uses electricity should be able to control magnetism, bioelectricity, and computer technology. One who users feu should be able to affect temperature, magma, pressure, and so on. The basic limits seem stifling at first, but gives the chance to use the powers in interesting ways that would be otherwise ignored due to the sheer simplicity of using absolute control over the entire element to solve any problem.

Plus, though this is just a minor irk, people tend to ignore climate and environment. How can a feu user create flames in cold environments so easily? Wouldn't a water user be a wits end in a dry desert? That sort of thing.

I genuinely hate abilities, in general, that are overpowered. They frustrate me the most, because people just put down all of these abilities that would be ridiculous if they were used in an anime. I especially hate instant death ones, where the creator has a dit that such ability will essentially just die from the ability straight away.
I also hate generic elemental abilities. Most of the time, people just put no imagination into it, so the blade, ou whatever weapon it might be used for, ends up sounding incredibly lame and killing the elemental idea. However, if they are done correctly, they can be very interesting weapons/blades.

My pet peeve are when people post abilities that they have clearly not thought of themselves; they have literally just taken an already existing ability from the anime/manga and they do something like change the colour of a technique ou make a technique plus powerful.
When people put brainless things like, "It can do a Getsuga Tensho except it is green in colour" ou "It's like Ulquiorra's Lanza del Relampago but plus powerful" it gets my goat every time !
Also when they seem to neglect detail entirely and don't bother to mention any type of limitation ou unique effect, rubs me up the wrong way...

*sigh*

So really any ability which has no imbued creativity ou is completely unoriginal.

Anything that greatly resembles a power that was already used in an animé ou a manga. Those bother me very much. I also very much dislike when they simply write down a description such as, "it looks like Ichigo's mugetsu, only it's like 15 times plus powerful than that". Seriously? I reviewed a blade on the bleach forum that had exactly that description. That really irked me.

Another overused power would happen to be the use of elements. Like silver said, they should also take into account that the user should be able to control everything associated with that element, not just the element itself.

One power I think is the most overused of all of these in the manipulation of fire. That's why none of my own characters revolve around fire, ou water, air ou earth for that matter.

Like many, I hate OP abilities. But what I hate is not a certain ability type as any ability that is correctly described and limited can be very cool to read about ou see used, but instead people who don't either put any imagination into their abilities ou don't think them through. I mean I have seen countless people on the bleach forums say this ability can kill someone instantly ou someone writes something that just means it can be used however the user sees fit with near limitless power involved.

When I look at an 'RP'er I tend to look towards the abilities plus because any personality information ou appearance information can be expanded on as time goes par but abilities are nearly always permanent and if the abilities are poorly designed, toi can guarantee the 'RP'er is either new ou terrible.