Duktig Flicka, if you register with livejournal then you everytime you post a journal, at the bottom is your privacy option. Public, Friends, and Private gives you varying levels of control over who you let see what. You have to add someone to your friends list though for that person to be able to see what you post. This will prevent you from having to worry about family and friends and employers finding the information in a generic google search. Should someone really want the information though, I am sure they could get it. Easiest way being if the setup a key logger on your computer and thus had your password and logged in but that approaches a bit of paranoia.

Also, nice avatar. Megatokyo fan?