Blog clearly so that you could deliver the point you are making

This does not mean that you need to have an English major(it helps if you do though not really required), what I mean is to be as clear as possible in conveying your message.

I for one commits a lot of grammatical errors when writing but I'll try to limit it as much as I possible can.  Not all of us could hire editors anyways.

My rule of thumb is if it sounds or reads OK and the point I want to make is clear then I could breathe easily.  Though if people wants to correct your grammar or spelling, welcome it.  Editing your work is not that difficult anyways.

So, blog away the more you do it the better you will become.  

-access out, God speed!