The cloud is raining down web services these days. The next company to abandon desktop clients and go web-only is Joost, the content streaming service developed by the the co-founders of Skype. It sounds like Joost work work with a browser plug-in, but details are scant at the moment. Sure would be nice if it worked with mobile browsers, but I’m betting that the Joost folks will want to get going with desktop browsers before they even entertain the thought of mobile handset support.