To be more specific, LIVE uses flat text files to store data. The main reason for this is that now you don't have to configure database etc. Just install and run. At this moment, no. But you can always try sending an e-mail.
Speed is essential, every second counts.
LIVE works with small files. No release date has been set yet. Yes you can. LIVE comes with a small routine that you can use instead of flock. It's free, simple to install, fast, and best of all, it works.