I'm sure everyone will find different uses for it.. but here is what's most useful for ME.
- I have a child in grade school, summer camp, etc. I can give out my Google Voice number (a single number). Regardless if I'm at work, at home, in my car (onstar phone #) or on my iPhone, this single GV number can ring all my phones when called. The school/camp will ALWAYS be able to reach me.. not having to dial multiple numbers.
-I can setup groups (i.e. family, friends, high priority) and choose how my calls come in when someone from those groups call (which intergrates with my iPhone/Google contacts). I can set it up to bypass the call screening for any of those groups or to only ring certain phones, during specific times.. say after 9pm, send a call from the family group straight to Voicemail or if a call comes in from my "family" group ring my phones. Very customizable.
- I setup a "business" group. Anyone who calls that is a member of that group it only rings my cell phone and work phone, during 8am to 6pm M-F.. goes to voicemail any other time.
- Unknown callers. When a call comes in from an unknown caller or telemarketer, I can force them to the call screening where they have to say their name. So when I pick up the phone I can hear the name first and CHOOSE whether to accept the call or send it to voicemail. I also have the option of recording the call or listen in on the voicemail mesaages they leave.
- switching phones during a call. Sometimes I get a call on my home phone. I;m on my way out the door. With GV I can press a key and have that call automatically switched to my cell number without the caller even knowing and I can leave the house and continue the conversation.
- personalized greetings based on groups. I have a side business. I give clients my GV number and put them in my "clients" group. When they call, I can set a personalized PROFESSIONAL GREETING that they hear. Such as.. "You have reached the offices of ..... blah blah blah)" When a member of the friends group calls the same number they can hear a different greetings, such as "What's up homey.. holla at me later Im busy... blah blah". I can also do this for individuals contacts.
- FREE SMS messaging speaks for itself.
- Transcribe my voicemail. When a caller leavs a voice msg GV transcribes it, sends me a text and an email.
There are many many more features.. this is just a few ways I use it.