xrichx saidYes. It also prevents Google from indexing your profile/pics. BUT, if you choose this option, you can't be nominated for Man Of The Day. Just an FYI for those that actually care about MOTD.
While you can through a google search accidentally find someone's profile, the chances of someone actually stumbling on a profile of a person they know is extremely rare. Compared to the rest of the internet, this site is very small and this isn't like FB or Google+ where we use our real names. If somebody finds your profile here it is because they were suspicious and they intentionally came looking for it; or if it is someone too close to you, they just looked at your browsing history on your pc or one of your devices. Not to make the OP paranoid, but if a determined, nosy person is trying to find something out about you all they have to do is make a no pic anonymous profile.