Here is a big sentence on the front page of a new web site targeted at iPhone users:
[Company] develops real-time personal discovery and contextualization technologies that leverage semantics and social attention to make social streams more relevant.
Industry insiders might understand what it means, but most people will not. I am not a big believer in mission statements. Often, the big wordy sentence that covers all will be the most compact way you can describe your business to yourself, but as you suffer from the curse of knowledge, other people will not get it.