There have been quite a few entries into the market like this over the years (I remember interviewing for one during the great dot com bubble in the late 90's).

There have been quite a few entries into the market like this over the years (I remember interviewing for one during the great dot com bubble in the late 90's). Normally competition is a good thing - it proves there is a viable market. But in this case, it seems none of the competitors survived. That should give one pause...