Can you get spyware/adware with FireFox on a Mac?

go here:http://toptenantispywareviews.com/
It lists top 10 the best and latest anti-spywares reviews in 2008.
You can download one and scan your system.
All can be trusted.

How To Make Firefox 3.5 Look Like 4.0

Trend Micro Titanium Internet Security 2011 – 3 User $3.94 SFT CLP TM TITANIUM INT SEC 2011 CON…

Webroot Spy Sweeper AntiSpyware $29.94 …