I was thinking the same thing. The same company whose CEO hobnobs[1] with Vlad Putin's buddies says:

remember to test sample passwords with our online password checker

Sure, be sure to send any password you're considering using to Kaspersky for thorough vetting. I'm sure they won't retain a copy of it. Trust them.

start thinking about investing in a password manager. Kaspersky’s password manager is a great one

How fortunate for everyone that they just happen to have such a useful product. But a quick Google also turned up a list of 7 open source password managers. Maybe consider using one of those instead?[2]

[1] http://www.bloomberg.com/news/articles/2015-03-19/cybersecur... [2] http://venturebeat.com/2015/10/13/7-open-source-password-man...