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Online-video startup Joost — whose name we think is Estonian for "trouble" — will cease development of its little-used desktop application and focus exclusively on a long-expected Web-browser plugin. None of which solves Joost's biggest problem: a lack of compelling content. Considering how difficult it was for NBC to convince many to download Microsoft's Silverlight browser plugin for online coverage of the Olympics, it's unlikely that users will flock to download something from an even more obscure company, especially when Adobe is building features similar to Joost's into Flash.But hey, Joost's plugin adds a social layer and RSS feeds! What, nothing for Facebook or the iPhone? If you're going to placate disgruntled investors like Viacom CEO Philippe Dauman with technology buzzwords, try to pick something they might have heard of. Cofounder Niklas Zennström might want to stick to yachting, because at least that enterprise is a winner.