Too little, too late
It sounds like a nice idea - having your voice mail transcribed into words and then emailed / SMS'd to you. Although since this is a major feature of Google-Voice, it's hard to see how this little company can compete. Even though they got there first.
They just don't have the size and coverage that a well-known name like Google has. No matter how good their tech is, when a multi-billion dollar monster elbows into your market place (one you thought you had to yourself - or at least were the leader in) and plonks itself down, right on your favourite spot, it's hard to see if there's any future.
If I was the major VC shareholder, I'd be looking to do one of two things: go over my patents veeeeeery thoughourly to check if there is any hope of a nice big payoff from an infringement suit, or to sell it off quickly for whatever I could get - not much in this day and age.
I did even look at their products a while back and tried out their free trial. It seemed to work nicely. But as a company they did seem to hide their achievements rather than exploiting the window of opportunity that their (at the time) unique product had, for all it was worth. Still isn't that what the brits do best?