@Melonlity -- one of the problems with a lot of those "dot com" companies is that they couldn't present a reasonable strategy as to how they would turn a profit. Back when those were attracting investors, we heard a lot about some new economy and such notions that things had changed to the point where approaching investments in a traditional way was laughably out of date.
As we saw from the death of a lot of those companies, the rules hadn't changed all that much and you will notice there are a lot of the high profile dot coms are still around and doing just fine. Those companies could articulate ways to turn a profit and that is what made them different from the rest of the pack.
In other words, traditional investment strategies such as the ones spelled out in CAN SLIM still work quite well. The rules haven't changed all that much over the years, so traditional approaches still work. "Old" isn't necessarily the same as "obsolete."