Chris001,  Thank you for your reply!  Please see my comments to your questions below in red.

Are people mining this coin because you will donate money to the charity if they do?
Yes that is correct... Myself and other SoberCoin Project backers will donate money to Teen Challenge International.  SoberCoin Project will donate 100USD for every 10K coins mined.  The donations are handled through Crowdrise fundraiser campaign, so SoberCoin Project will never handle the donated funds directly.  Donations will go from Crowdrise to Teen Challenge's account.  For more info on Crowdrise please see crowdrise.com/about

There are 3 ways a person can contribute to SoberCoin Project
1. Mine for Sobercoins - Every 10K Sobercoins mined SoberCoin Project will donate 100USD.
2. Become a SoberCoin Project Backer to help financially support Teen Challenge International.
3. Donate directly to Teen Challenge International if a person is not interested in mining or becoming a SoberCoin Project Backer

What are the other things about your coin that people should consider when they are deciding if they want to become involved?
SoberCoin is all about building a community to help raise awareness of drug addiction and to financially help support Teen Challenge International. Sober coin is not intended to be used for profit or to purchase goods/services.

Will it be on exchanges?
Sobercoin is not intended to be on exchanges.

What are the block times? What are the block rewards? How many total coins?
Initial coins per block is 50
Block halving rate 777000
Max: 77,700,000 + 0 premined = 77,700,000 coins
Target spacing in minutes is 10
Target timespan in hours is 168
Coinbase maturity is 10