根据http://googleappengine.blogspot.com/2011/05/year-ahead-for-google-app-engine.html 这篇文章，Google很有可能在年底或者明年将GAE变成正式版了，我感觉Google要做成另外一个Google Apps，免费和收费相结合，免费限制更多，而收费的就更狠了。$9/app/month，感觉有点贵了，如果所有的APP/month20$我是愿意支付的。
Free Apps: Similar to the Free Apps of today but with more restrictive quotas
Paid Apps: Similar to Apps which have Billing Enabled today, except they will have a 99.95% SLA and cost $9/app/month in addition to usage fees. Customers will need to opt-in to this.
Premier Accounts: A new offering which will allow a company to not pay for individual Apps but rather use as many as they need. Premier Accounts will be eligible to receive Operational Support for $500/month in addition to usage fees.
给我的直接冲击就是免费的额度变少了，实况炒股是我的第一个Python网络程序，用的还是Django，里面的代码现在看起来还有很多优化的地方（那时候还没有那么多新开发的API），以前的流程很消耗CPU（虽然用了memcache，但需要频繁访问互联网获取股票价格），周五时候我想到了一个不错的算法，可能可以降低80%消耗，但我很懒，觉得就那样凑合了。我实在不愿意改造，要不就推翻重来了。
我的实况炒股还违背了Google App Engine Terms of Service，我用了13个App构建的，没办法，VPS价格太高，而GAE门槛低。
4.4. You may not develop multiple Applications to simulate or act as a single Application or otherwise access the Service in a manner intended to avoid incurring fees.
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