Don't invest an entire year's income in a billboard newcomer!
Sounds like common sense, right? But alas, we're still promoting this sort of careless behavior with our Fool ads about "next home run stocks." Either that, or we're glossing over reality because is sounds better. "$10,000 in Wal-Mart in 1975 is $25 million today!" Sounds easy? Too good to be true, in all likelihood.
See this post for details.
Sj, heretic, fan of critical thinking...