Why are investors suing facebook when they made a free market decision to purchase FB shares at listed price?

[Talibama]

*Investors should consider the investment objectives, charges, expense, and unique risk profile of an Exchange Traded Fund (ETF) carefully before investing. Leveraged and Inverse ETFs may not be suitable for long-term investors and may increase exposure to volatility through the use of leverage, short sales of securities, derivatives and other complex investment strategies. A prospectus contains this and other information about the ETF and should be obtained from the issuer. The prospectus should be read carefully before investing. Bla bla bla-does this ring a bell to these claimants before they chose to invest in facebook? They wouldnt be moaning if they had an 18% gain, but are made at an 18% loss. That is the name of the game, your risk your reward-you will have both.
@1%-yeah your right, I just stole this off the internet even though it may not apply to these individuals investments. I am just trying to highlight an investment disclaimer that would be associated with any stock purchase. These people should have read the fine print concerning their stock purchase. They chose to disregard the warnings and proceed with their purchase-their fault.
@Fizzle-most stock investors dont have the same information that the elite has. To us its insider trading, to them its perfectly legal. You dont see nancy pelosi sitting behind bars do you? martha stewart only got 1 year house arrest for a very serious crime-wow, she learned her lesson! You would be thrown in jail for 10+ years if you were caught insider trading. If you dont feel that you have enough information to purchase a particular stock, then dont. Nobody made these people buy facebook stock.