I was saving some money in btc and it is quite depressing that a month ago I had about $900 and now every week I receive the payment from a signature campaign and see the sum in USD decreasing...
If you have other sources of income, just leave that money from signature campaigns untouched. This way you can accumulate good quantity of bitcoins over time. I think if your goal is to achieve returns like ten times or so at current price levels, you need to forget about the bitcoins in your wallet for next five years.