You said you found the writing style immature, but have you considered the job ads of the companies OP might have applied to? "Xbox's PS3 Nerf guns Starcraft/Rock band competitions !!!".. How mature is that?
I am not talking about the 20% interviews where it didn't workout, but the other 80% where there was no reply, I am sure many of those job ads won't classify as "Mature" in your view. Some of the best programmers i know can't write even proper English sentences, since its not their first language. Do you think they are any less able to do the job? And does it disqualify from expecting even a reply to their application?
I completely agree with all your arguments except for one , writing proper English is really a skill that a developer need to have.
On this post http://www.joelonsoftware.com/articles/CollegeAdvice.html
the first advice that Joe gives to the college student is Learn to Communicate and he has some good arguments for it.
I too am not a native English speaker by the way.
I am not talking about the 20% interviews where it didn't workout, but the other 80% where there was no reply, I am sure many of those job ads won't classify as "Mature" in your view. Some of the best programmers i know can't write even proper English sentences, since its not their first language. Do you think they are any less able to do the job? And does it disqualify from expecting even a reply to their application?