2. American Tower As mobile usage for Facebook grows at rapid speeds, mobile networks strain, which benefits companies that own and lease wireless infrastructure towers, such as American Tower ( AMT). American Tower recently raised tower revenue guidance following first-quarter earnings, and converted into a real estate investment trust (REIT) to become more shareholder-friendly. "We believe AMT has both the ability and desire to grow its dividend in terms of absolute amount per share (growth in the business) as well as percent AFFO (adjusted funds from operations) payout. The company believes its long-term AFFO growth rate is double digits and dividend growth should actually exceed AFFO growth," wrote Raymond James analyst Ric Prentiss in his research report following the earnings release. He rates American Tower "outperform" with a $71 price target. Shares of American Tower have gained 12.9% this year.