Sussed it

They make money from the people you text as one source of revenue.

Charge for Use. The personal computer to mobile aspect, the mobile to personal computer aspect and the mobile to mobile aspect of the Chikka Services shall be subject to the customary tariffs imposed and charged by the mobile carrier involved on each of the respective aspect.

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Chikka and its affiliate companies = Telemarketing

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Still, it is up to the individual how they wish to save money, but I prefer the folk in the Phil to only be charged 1 peso for an SMS, and know there mobile numbers are privatr, while I have the money to easily afford 5p.

Here's the info on the corporate model http://newsbreak.com.ph/newsbreak/story.asp?ID=768