(CNN) -- Last Tuesday Google unveiled its attempt to rival Facebook, a social-networking product called Google+. I received an invitation from a friend and have been putting this nascent service through its paces -- especially on my Android phone. Here's my experience so far: (Do you want a Google+ invitation? Sorry, you may have to wait.) First, a caveat: Absolutely everything about Google+, including its mobile experience, is in a state of flux. So at least some of what I write here will definitely change in the coming days and weeks. Google+ is very much a "beta" service, sporting plenty of glitches, mysteries and oddities. Therefore it's just as well that the vast majority of people using it so far seem to be serious social media geeks.
@highlight
CNN mobile columnist Amy Gahran reviews the Google+ app on her Android phone
@highlight
Google+ is still very much a "beta" service with plenty of glitches, mysteries and oddities
@highlight
Gahran: Google+ user interface is cleaner, more intuitive, more user friendly than Facebook's
• The opportunity to deeply, even inherently, integrate Google+ with @placeholder