Great to make it look like someone took the time to do a bio about you because you're important, while it's just you writing. Lack of self-confidence if you ask me.
How do you figure? Every time I've been asked for a bio for a conference or similar, they've asked for it in third person. Reading bios in conference proceeding in first person would just come across as weird to me.
e.g. top hit on google: http://smallbusiness.chron.com/write-short-bio-yourself-5728...