On Thursday, Cramer opened his mailbag to answer viewer questions, as well as report back on the homework he did on stocks he was asked about previously.

Apollo Investment Corp : After doing some research, Cramer thinks this business development company's 15 percent yield is a "big red flag." He thinks the current price reflects a likely dividend cut in the not-too-distant future. If you are looking for a massive yield, he suggests Annaly Capital Management , which has a 15 percent yield. For a business development company, he recommends Solar Capital , which has a 10 percent yield.