Quote from: steve417674 on May 05, 2013, 12:03:11 AM

The blue and yellow lines are exponential moving averages (EMA). The EMAs are a weighted average of the closing price, over a defined number of periods, with more weight given to the most recent price. I don't know exactly how the lines are parameterized, but it's probably described in more detail in the corresponding forum thread: https://bitcointalk.org/index.php?topic=43514.0. You can disable the lines with the link directly underneath the chart: "Hide EMAs".

ah interesting thankx