In general dilution would make a stock's price go down - more shares out, pie is the same size, so each slice of the pie (share) is worth less.
In practice the math is a little trickier, as when new shares are issued, the company receives funds in (the terms may are may not be great for prior shareholders).
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!