Take the lastpass security challenge, accessed through the lastpass vault, then select security challenge on the left hand side.
My score is ...
Your Security Score - 80%
Your LastPass Standing - Top 7%
Master Password Score - 83%
It would be higher if it did not include some junk one-off passwords. Quite a few of my passwords are on sites that have been hacked too -- eg, sony passwords were hacked, yahoo too it seems.