trying to download the (self-installing) app twice _every_ time, whilst you're (actively) trying to join a meeting in your browser is the kind of organic popularity the yahoo toolbar had...
you don't say. That way (and autostarting and nagging) you easily get a lot of popularity compared to a web-service (with most people being unaware of bookmarking features in their browser). That was the operating principle of a lot of crappy ad/malware companies back then this was still considered an ethical businessmodel. Seems we are seeing time repeat itself.