Facebook FB is set to report second-quarter 2021 results on Jul 28.For the quarter, Facebook expects year-over-year revenue growth to remain stable or modestly accelerate compared with the growth rate in the first quarter of 2021.The Zacks Consensus Estimate for revenues is pegged at $27.89 billion, indicating an increase of 49.3% from the year-ago quarter’s reported figure.The consensus mark for second-quarter earnings is pegged at $3.04 per share, having been revised 0.3% upward in the past 30 days, indicating 69% growth from the figure reported in the year-ago quarter.Facebook's earnings beat the Zacks Consensus Estimate in the trailing four quarters, the average surprise being 31.07%. Facebook, Inc. Price and EPS Surprise Facebook, Inc. price-eps-surprise | Facebook, Inc. Quote Let’s see how things are shaping up for the upcoming announcement.Factors to Consider for Q2 EarningsUsage of Facebook’s services, including Messenger, Instagram and WhatsApp, is expected to have remained strong amid coronavirus-induced lockdowns and shelter-in-home guidelines. This is expected to have driven top-line growth in the to-be-reported quarter.The Zacks Consensus Estimate for second-quarter MAUs worldwide is pegged at 2.908 billion, suggesting 7.7% growth from the figure reported in the year-ago quarter. DAUs worldwide is pegged at 1.918 billion, indicating 7.5% growth from the figure reported in the year-ago quarter.An improved ad-spending environment, as well as accelerated digital shift, is expected to have driven Facebook’s ad revenues in the to-be-reported quarter. The company’s top line is likely to have gained from improving market share, driven by a growing user base and continuing innovation in ad product.However, changes made by Apple AAPL and Alphabet’s GOOGL Google in their mobile operating systems and browser platforms have limited Facebook’s ability to track user-activity trend. Intensifying competition from Google, Snap SNAP and Twitter for ad-dollars remains a headwind.These factors are expected to have affected year-over-year advertising revenue growth rate in second-quarter 2021.The consensus mark for this Zacks Rank #3 (Hold) company’s second-quarter advertising revenues is pegged at $27.17 billion, indicating 48.3% growth from the figure reported in the year-ago quarter. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here. Bitcoin, Like the Internet Itself, Could Change Everything Blockchain and cryptocurrency has sparked one of the most exciting discussion topics of a generation. Some call it the “Internet of Money” and predict it could change the way money works forever. If true, it could do to banks what Netflix did to Blockbuster and Amazon did to Sears. Experts agree we’re still in the early stages of this technology, and as it grows, it will create several investing opportunities. Zacks’ has just revealed 3 companies that can help investors capitalize on the explosive profit potential of Bitcoin and the other cryptocurrencies with significantly less volatility than buying them directly. See 3 crypto-related stocks now >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Apple Inc. (AAPL): Free Stock Analysis Report Facebook, Inc. (FB): Free Stock Analysis Report Alphabet Inc. (GOOGL): Free Stock Analysis Report Snap Inc. (SNAP): Free Stock Analysis Report To read this article on Zacks.com click here.