Twitter's stock plunged around 20 percent following its early earnings release on Tuesday, wiping out gains achieved in the past year. The move amounted to the microblogging site's second all-time worst day of trading, and the stock has continued to sink ever since.
Brian Kelly of Brian Kelly Capital said that while the drop presented an interesting trading opportunity, the company is still struggling with an "execution problem. It's probably going to be a quarter or two before this is an investment again," he said.
Triogem Asset Management's Tim Seymour was more bullish and said the Street isn't focused on the right areas when it comes to Twitter's growth prospects.
Seymour said initiatives like live-streaming service Periscope and a partnership with Google should be given more time to play out. "Seventy-five percent growth is still much better than their peers," he added.
Read MoreTwitter's Periscope gains 1 million users in first 10 days
Social review site Yelp faced a similar fate as Twitter on Wednesday, when it sank by more than 15 percent after reporting quarterly revenue and guidance that missed analyst estimates.
RBC Capital Markets analyst Mark Mahaney had called Yelp his top pick among small-cap internet stocks into earnings, but said on "Fast Money" Wednesday that he'd have to "figure out" whether he'd be changing his tune on the name. By Thursday morning, Mahaney had downgraded Yelp to "sector perform" and slashed his price target by to $50 from $82 per share.
Steve Grasso of Stuart Frankel said Yelp's lack of a competitive advantage could be its downfall, as more players enter the online review space. "The barriers to entry are nothing here. Amazon's already there," he said.
Brian Kelly said not to buy Yelp's dip, and called the company "a broken story."