Do I need to keep the “Powered By OptimizePress” text in the footer of my sites?

No, absolutely not.  This option can be turned off inside the OptimizePress admin control panel.  We also provide the facility for you to use your OptimizePress affiliate link with the footer text so you can actively promote OptimizePress and earn commissions for any sales you generate.

If you already own OptimizePress, to turn this link off you need to go to OptimizePress > Dashboard > Global Settings > Promotion Settings (Off)