I have to agree with op's concern as they echo mine also.English is not my first language and as such I always have problem expressing my true thoughts in it.
I do have a lots of time something useful to add to topic of thread or ask an important question but due to my bad English, I ended up making what mosts think an unconstructive post
I know there are local forums but first they are not much active and second more interesting and informative threads are created in English forum