There are at least two boards devoted to the David Lazar shell plays here on iHub. Imho you can make money on them as he works the process to rehabilitate and ultimately sell the shells. However, he does tend to sell to Chinese buyers, and then it is common to see a reverse split and no communication from the new company.
He makes his money on the process, not by speculating on the long term success of the merged company. If you align your buys and sells with that, you can make money in the DL shells. Betting on the rehab process and etting on the new company are two different things.
If I could afford to buy all of them, I would not need to buy any of them and I sure wouldn't be spending time on the message boards!