Wow, I'm so sorry Big3, that's really sad
And what you're doing is not crazy or irregular... I think it's quite normal to take those actions and to feel so spooked about the incident. A guy I used to play in a band with recently died and although I wasn't friends with him on Facebook, nor had I seen or spoken to him in about 5 years, I managed to get my way to his page and I found myself looking at all his old pictures and all his wall comments (as his profile hasn't been locked or made private or anything). Like Seltzer said I think it's a way of reforming links and memories with that particular person.