Another day another... interesting idea.
A company called Sanswire is reviving (!) an idea of using telecommunication blimps, as an alternative to telecommunications satellites and towers. Why? Well, they are cheaper than satellites. But at about 21,000 metres, geostationary is not an easy call. At least he's realistic about their lifespan being short... if 18 months is realistic.
They're doing proof of concept work now - albeit on a much smaller scale.
Could any useful technology come out of this? In fact, resident telecomms expert Peter Pacers suggested a realistic application would be to temporarily boost mobile reception at large sporting events. Perhaps Sanswire is just generating publicity ahead of something more realistic.