NO. Soliciting business for yourself in the user forum violates the terms of service. You will have to find some other way to market your skills.
And...paid tax preparers are not permitted to use TurboTax. If you are a qualified tax preparer you have to use one of the professional versions of the software.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**