Articles like this one, and other articles about online privacy, collection of demographics, etc. increasingly lead me to the conclusion that posting on the net is not at all like having a conversation, nor is reading the net the solitary bedroom activity that so many privacy advocates hope that it can be. Technologically, it is different, and social conventions will not change that.
Everything you are doing can be, and therefore eventually will be, recorded. Not by the CIA, or by an evil global megacorp, but by useful services like Yahoo, google, and dejanews. Even kuro5hin has a search feature that could be used to "dig up some dirt" on a member.
Recently, I heard of an IRC archive and search engine. This means that IRC and similar instant chat systems are also not immune. Things you say can be called up 5 years later, in exact detail, but will probably be lacking the context that an outside observer will need to know to judge your words. You were mad at someone, or an idea, and were obnoxious about it online. Do you think someone, or even you, will understand those words of anger years later?
Most people believe that they can defend their statements, but they may never get a chance. The links a potential future employer or investigative service finds online and attributes to you might not even be read, but counted in categories like goofing off on the job, political/hate group, kooks, and pron. You may never know who is reading, or have a chance to rebut misunderstandings.
The use of email for job recruiting could make such an investigation fairly trivial, since you've already given them an email address. You don't use the same email address for job hunting and for goofing off, do you? You do? Oh, well.
So to address your question, I think the answer has to be no. I would not put my children's baby years online, unless I could control who could see that information and whether it would be indexed by search engines. Since it sounds like you are using some kind of ASP, you might have very little control over what happens to the information.