Have two accounts for regular(free) users and enterprise(paid) users: 1. Free/Regular user - Restricted to 'x' tweets a day, 'y' tweets a month or ad served et

Have two accounts for regular(free) users and enterprise(paid) users: 1. Free/Regular user - Restricted to 'x' tweets a day, 'y' tweets a month or ad served etc. Not applicable for enterprises, marketing firms etc. 2. Paid/Enterprise user - No restrictions on tweets per day. Enterprises need to pay 'z' amount on a monthly/yearly basis. No ads are served to the account holder. More privacy, backup options. Tweets are promoted based on keywords etc.