yes it is it costs nothing!!
yes you can,, i have sprint and unlimited texting and have been using facebook texts and it is free. does NOT count as internet fees.
yes it is
yes, it is the same cost as a normal text message
If you have unlimited text with a provider the texts are free unless the company your using states otherwise for example facebook in your case. I have unlimited and it use facebook messaging on my phone and its free. So I wouldn't worry.
Yes, you can use the Tmobile prepaid Unlimited text and $0.10 a minute plan where you can send as many texts as you want for $15 a month. Talking still costs you $0.10 a minute, but texts are all free. For $50 a month, you can get unlimited talk AND text as well.
yes
yes it is!..to be sure call your telephone co. and ask..if you have unlimited like I do its free..
yees
Yes, to an extent. It will cost extra to get unlimited free texting with your plan, and Verizon will still charge you extra for texting internationally.
No
As long as you have unlimited texting you're fine. If you do not have unlimited texting, then you will have to pay the charges your phone charges for texting.
Yes.