Look, I can a give a real example. Once upon a time I spent 90 minutes working out a solution for someone and posted it to a forum. Then I hopped over to another forum. There I found the same person had posted the same question and got an answer from someone else. My 90 minutes was wasted effort and time. BTW it was macropod that gave the other answer.

It is perfectly fine to post the same question to different forums - and they ARE different forums - just mention that you have posted in the other forum(s). That is it. Nothing too difficult. Just tell us. Again, this is explained in the link macropod posted. Please read it.

From a simple google search...
http://www.wordbanter.com/showthread.php?t=76728
http://www.lifehacker.com.au/2012/07...icrosoft-word/
http://ask.metafilter.com/86477/How-...Microsoft-Word
http://instructional-design-speciali...isting-ms.html

I am not sure if these will give you the answer you want, but they may give you a start.