Cool New iPhone and Android app
Check out viber.com.
Pretty slick free voip program. I just downloaded it to my droid this weekend via Google plus. Syncs all of your phone's contacts with those who have signed up for this. Very cool for keeping in touch while in Mexico or any other country for that matter. Thought I would share for those of you who take your rigs south (or north) of the border.
I was texting my buddy in LA Bay all day yesterday to try it out. Super cool. Have not tried the voice yet but will report back when I do.