If you are a buyer of BTC for use on SR, then there are two smart things you can be doing (outside of issues of anonymity).1. Let's say you are buying with 100 USD, then you should buy in 10 dollar increments over 10 days (probably exchange software could allow this to be done automatically, but haven't seen it before). This way you spread your risk of buying at a time when the price was high and then dropped. You'll receive the average price this way, which makes it much less likely you'll lose out.2. Place Limit Orders instead of Market Orders. Search the forums for information on this. It's the same concept as Limit orders in any other market. Using both of these techniques will reduce your exposure to extreme bitcoin fluctuation.