Purchase of 4 Facebook shares

Today I bought 4 facebook shares at $162,71.

Although Facebook is not paying any dividends I wanted to add a few shares to my portfolio for some time. Today Facebook is almost 5% down from $170,54 to 162,71. For me reason to buy 4 shares. I tend to have problems seeing the value in stocks like facebook with a high PE ratio and no dividend yield, but based on the return on equity of above 20% and the profit growth figures I consider this a good buy for the long term.