On my visible profile, well I was actually honest. Okay, so my name is a pen name and I'm obviously not a blue and white bunny. The most I'll give up is that I'm male and I live in Long Beach. I like to keep my personal self well...just that. Personal. Maybe if I get to know you better I'll share more intimate details, but I don't feel quite comfortable with everyone I meet online knowing my "real life" (as it were) details and what not.
However, HubPages does know my real life personal info because that's needed if you're applying for taxes and adsense and such. But other than that? I use Pen Names and what not. I guess it's not affecting me too adversely since I'm getting so-so traffic. I don't think using a real life picture of me will really alter things too much if my content isn't good.