Ever since I started using Google Voice I've been a big fan. From the great voicemail services to the ability to send an SMS from the web, it has served me very well. I change phones fairly often, so having one number available to each of them is extremely convenient. Although the Google Voice app for BlackBerry isn't the greatest, it does get the job done. As we've said before it has its pros and cons, but losing things like MMS may not be favorable for everyone. In any case, if you've been wanting to get in on the Google Voice fun and you live in the US, you no longer need an invite to do so. Just head over to voice.google.com to sign up and then download the BlackBerry app to put your new number to good use.