Let me preface this with SS Mario is speaking what is generally considered the consensus about Lion batteries. Most people will tell you the Lions do not need conditioning. So don't pit his post against mine as the jury is still out on this issue.
BUT in my experience with many different kinds of cell phones, PDA's, Laptops, ect...condiditon the battery is NEVER a bad thing and can only help.
For instance, I bought a brand new GSM phone from AT&T last year. Sales guy told me the same thing "No need to condition". The battery lasted me about 3 months. I got a new battery (same exact one, I checked), conditioned it for a week...and it still working great today.
So for what it is worth, I only judge by my own experience...and my experience is condition every single rechargeable battery you ever get. It never
My Area51m gets some excellent unplugged times...especially when I'm doing work related stuff on it that does not require the GPU to heat up.