The evad3rs team has posted a "letter to the community" to address many of the concerns raised about the surprising release of their iOS 7 jailbreak. It includes their reasons for the inclusion of the Chinese app store, TaiG, the pirated apps found therein, why they released it when and how they did, and what, if any, financial considerations they had. From evasi0n:
We are deeply troubled by the rumors and speculation surrounding our iOS 7 jailbreak. We would like to present the whole story to you.
We're still advising that you should wait before jailbreaking iOS 7. But, if you're interested in the iOS 7 jailbreak, give it a read and let me know - how, if at all, does the letter influence your opinion of the evasi0n?