spyware in ubuntu?

[Charles Malespin]

Hi all, I have been using ubuntu for the better part of 4 months, and I
have been doing all the noob things and studying as much as I can about
ubuntu/linux.  I have read that for all intents and purposes you dont
need anti virus in linux, but what about spyware protection?  Is there
something for ubuntu to use and check if you have got spyware? Sorry if
this seems like a really dumb question,  I am just asking because I
would rather be safe than sorry.  Thanks, 
Charles