NEW YORK (TheStreet) -- Twitter  (TWTR - Get Report) may be able to generate some short term growth but the social media giant is doomed long term, Carnegie Mellon's College of Engineering Professor Vivek Wadhwa told CNBC's Jon Fortt on "Squawk Alley" Tuesday.

"I believe you said that Twitter is toast because of the lack of user growth. Is there potential upside though in these content deals they've been doing? The revenue side of the business does every once in awhile swoop in and rescue the lack of user growth. Is there a potential for out performance here?" Fortt asked.

"There's a potential because short term you can play a lot of games. Long term, I mean you and I are both on Twitter. If you note over the last two or three years, the participation of others has gone down," Wadhwa replied.

Twitter is not being used "actively." Instead, users "watch other people on it" rather than participate, he said.

"It's losing momentum" and "not growing in users," Wadhwa continued.

"So I'm not optimistic about Twitter overall. Some short-term gimmicks, maybe, but long-term it's toast," he stated.

Wadhwa's comments come ahead of Twitter's 2016 second quarter earnings report, to be released after today's closing bell.

Wall Street is expecting second quarter earnings of 10 cents per share on revenue of $606.8 million, versus the prior's year's earnings of 7 cents per diluted share on revenue of $502.4 million for the third quarter.

Shares of Twitter are declining by 0.75% to $18.51 this afternoon.

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Separately, TheStreet Ratings rated Twitter as a "sell" with a score of D.

This is driven by a number of negative factors, one of the most important has been a generally disappointing historical performance in the stock itself.

You can view the full analysis from the report here: TWTR

TheStreet Ratings objectively rated this stock according to its "risk-adjusted" total return prospect over a 12-month investment horizon. Not based on the news in any given day, the rating may differ from Jim Cramer's view or that of this articles's author.