Do you delete comments?

I ask this, because I have been bugged about a comment on my blog. If you are reading this blog..or have read this blog often..dont worry it isnt a comment from you.

This comment came from someone that I have never heard of..nor really think reads this blog other than stumbling across it during a search. It wasnt mean, it wasnt directed towards me...just that I dont agree.

I will probably leave the comment...but Im curious as to how many people censor their comments? And I'm not talking about the spam comments...I do delete those when I do get them.