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Agreed. Furthermore this statement:

> Robinhood is venture-funded by Google, Andreessen Horowitz and many others, which affords us the freedom to focus on building a wonderful brokerage experience rather than short-term profits.

...just smells of lock-in. Is "free trades" for perpetuity?

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Can you explain the types of lock-in that might be faced a little more? I understand that once you hold some stock with them they might introduce fees prior to you selling it, but I'm assuming you have something more in mind.

Just general trading restrictions to prevent excessive intraday trading.

I guess that's why there will be a Premium service and an API.

With zero brokerage, you can write bots that make money and abuse the market to no end with very small capital.

It's not really that easy. The spread is still not zero and you may still get bad fills if you are slow or if the latency is high enough (assuming that you are taking liquidity).

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