Mark Pilgrim seems to have disappeared from the Internet. Eric is searching for anyone who might know him personally to make sure he is ok.
Sure people aren't just being nosy? If something happened to him, it is highly unlikely he'd remove his entire web presence.
When someone removes their web presence isn't the implicit message that they don't want to be contacted?
If, however, you're trying to cause endless speculation about your motives, and for people to wonder whether you're dead or alive (and I do hope he's alive), I suppose this way works.