Turbotax Online

I file taxes for myself and for my son.  We have no state tax returns.  Can I prepare and e-file both of our federal returns through the Turbotax online service as I am able to through the CD/Download product (i.e. I used to buy one CD/Download and could file both our returns, without additional cost)? 

 

If I can use the online product, do I need to create a separate intuit account or user name for my son to file his?  

 

Thanks in advance for your help!