Google Voice is AMAZING.......saved my ass recently when I was sitting in an airport in Moscow trying to get on the internets....
The "Free wifi" at the airport required you authenticating your phone...Put in my regular phone number I get a text but it is missing the code...try it again...no code... Then I tried my google voice number that I have forward to the same phone....BAM got the code and got me my internet...Whew! Also hooked up a few other patriots that couldn't get past the Soviet wall...
I use hangouts ( part of google voice) on my mobile phone all the time...long as I got wifi I can call all around the world very inexpensively...I was just in Italy and called home with hangouts for free the whole trip ( because I was calling a U.S. local number)
Then there is my little Obihai that works with google voice that I bought for $60 that provides us with a land line that can call all over the U.S. for free and cheap international...Awesome voicemail system, awesome caller ID filtering system...any bastard calling me that isn't on my "safe" list has to state their name...amazingly 90% of the asshat solicitors that used to drive me crazy now hang up and appear as a "missed call" darn
I also use the filtering on my mobile ....I have my t-mobile number that I don't give to anybody and my google voice number that forwards to the t-mobile number that goes everywhere and anywhere..on my business card, on my website.....I don't care if I don't know you and you're not one of my "safe" callers you have to state your name, no name.... no answer AWESOME AND All my voicemails and text are there years back just a few clicks away...
There's google+ which is a little weird but still kind of a cool little social thing....Google News ...Yep set up for just the news I want to be informed on.
OH shit Google flights OMFG! The most awesome tool for booking flights anywhere in the world...
Of course google maps...but did you know? Say I'm going to BF Egypt...I type in the city and then type in the search bar Hotel bam all the hotels in the area and then just like expedia or Priceline you punch in your dates and it shows whats available and the price you're going to pay....
Yeah I'm a googlenut love me some google....