I (and I'd imagine other forumites) have no problem with dyslexia or any other condition (eg poor sight) that would cause problems with posts, Steve.
I don't intend to offend anyone but not everyone has dyslexia. Sometimes, it's lack of knowledge. I had problems with inquire/enquire and practice/practise but read up and learnt about the correct forms and usage.
Other times, it's just laziness - something I'm very occasionally a victim of if I'm on the iPhone, especially at night - but this is more in respect to lack of punctuation or capitalisation.
Surely, if we allowed posts to descend into "txt spk", then it merely increases confusion and problems?
Next time you post something wrong I will be sure to point it out.
Happy for you to do so!