Here’s the good news, bad news for Twitter: Analyst By: CNBC.com News May 04, 2016 at 11:24 AM EDT Twitter's user base is stabilizing, but the company's new ad products are cannibalizing its old ones, says James Cakmak of Monness, Crespi, Hardt & Co. Read More >> Related Stocks: Alphabet-A Facebook Twitter, Inc.