Auto Posting to Facebook pages

Can anyone help me.

I have a list of custom facebook business pages, how do I autopost to these pages ?

Is there some tool/software, where I can upload those facebook busienss pages and for the bot to go and post to there page?

I've seen people posting and spamming to peoples facebook pages in the past. How are they doing it ?

inbox skype for me. if u need fb account

Hmm... i have spam on facebook group, by token have never spam in page, hahaa