More or less any site that gets shamelessly promoted here looks terrible in the end. To these people, you are only inviting forum regulars to investigate your companies and in many cases prove you to be godawful, effectively losing more customers than you might hope to gain on this site.

If you claim to be a writer and can't write worth a damn, it's probably better for you if you simply don't post here, since you're only losing potential customers by proving yourself to be a bad writer (although, to be honest, that's kind of a good thing as it prevents them from wasting their time and money on a 'writer' who can't satisfy their needs). Students will look at your awful posts on here and think "Wow, do I really want academic material written by a person who makes even a simple post on a public forum impossible to make any sense out of?"
You can pick out grammatical errors from other forum users all you like in response, but look at it in context; you are wrongfully seeking paying customers as a writer on a forum that does not condone this behaviour, and they will be able to tell a few simple typos from persistent grammatical inconsistencies and failed attempts at punctuation. Considering the fact that grades are riding on this, they are going to be a great deal more reluctant to look to you as a writer to provide them with quality content. Who do you seriously think you are helping by showing yourself up as a buffoon with a seriously transparent act that has already been done a billion times?
Also, to the students who won't even search through the forum a little for information about a company, you unfortunately seem the types to just submit any work you get from the people you pay without a single glance at what crap they might have handed you, and I'm almost tempted to say you deserve what you get if it all goes to pot for you and you get a poor mark handed back.
The people arguing about race and whatever: If you can write in English at the appropriate standard expected from your intended audience, and understand the culture for which you are writing, then go ahead and feel free to write academic papers on topics you specialise in. Just don't expect support on this forum when you belong to companies that lie about the nationality and skill level of their writers. Really, it's great that you are bilingual, but you need to be able to write at a very high standard in the English language if you are planning to write essays for EFL students.
There is a culture clash here as well; certain phrases that might make sense to you in your native language will stick out like a sore thumb if you try to translate them into English. While this may be fine in day to day conversation, look at it contextually and you can see that it simply is not appropriate for the writing style required of an academic paper.
Really, a lot of the comments regarding your use of language might rub you the wrong way, but in context, if you are a writer for an essay company you really should not be highlighting aspects of your writing style that stand out as an indicator of ESL writing style, because if you're writing for EFL students such phrases are seriously going to confuse them, and for the idiots that do submit them as their own (I have no sympathy for these people, but eh, it happens, and they pay as well, cringeworthy as that may be), the people who mark their paper will look upon these odd phrases with suspicion.
tl;dr - Most of the time, you're getting the smackdown because you deserve it. You set yourselves up to be kicked down. If you don't care to take in the rules or the nature of this forum, then don't expect any consideration from the other forum members in return because although there are people who find this all very amusing (:D) I'm pretty sure a lot of them are really fed up with your s-i* by this point.