The app just has too many issues still to promote it. If they promote the app and it sucks...they lose a ton of opportunity and have to work to get back to where they were.
Right now, the most i've seen broadcasting at one time is 8. The most I've seen viewing a broadcast at one time is 25. When there are 8 broadcasting, there are still only maybe 25 viewing total. If the app gets a few people broadcasting, connections fail or I've even had the app die completely several times over the weekend.
On a good note, I see there are new signups at a rate of about 12 per hour. And, I saw some really good broadcasts yesterday. One person was broadcasting a Maroon 5 concert. Another was sharing his experiences on Bourbon St.