LumerB Last week, I showed how Verizon's (VZ) stable fundamentals and attractive valuation might create an attractive short-term buying opportunity for high-yield investors. While I can recommend Verizon for a certain kind of income investor, I can't do the same for AT&T (NYSE:T), its major rival. Many of our members and SA readers still own AT&T, a powerful cautionary tale about the dangers of high-yield dividend aristocrat investing. I've been warning about AT&T for several years now. YCharts AT&T spe ...