reason for any split..stock is weak going forward..dont be fooled.
AAPL has split twice in the last ten years, total of 8:1 since 1987. If you're really 19 years old, then you should realize that history began before you learned to read.
BIDU's stock split will improve liquidity, may cause some short term gyrations, but if the company continues to perform as it has in the past, growing at 60% per year then it will continue to rise at an average rate of 60% per year.
BIDU's current price reflects growth of "only" 45% per year, a bit behind it's current growth rate. I expect BIDU to double over the next 18-24 months.