1. Check a video before download with Bitzi. If a file's been rated you'll get an idea of it's quality & content. Preview a download after say 5% to check the contents!!
How to use Bitzi

2. Be careful when downloading. The whole Gnutella network has files which are infected, it's not just a LW problem.
WARNING: Viruses on the network you should be aware of

3. See point 1.

4. Never seen the message 'content removed'... that's a new one!

It's a good idea to use LW basic (which is free) first, before spending money on Pro