Weibo (NASDAQ:WB) has pulled off quite the feat, seeing its stock more than double in back-to-back years. China's social media speedster is rolling, and we'll get a good indication if Weibo has the potential to double yet again in 2018 when it reports quarterly results on Tuesday morning. 

Expectations naturally run high for Weibo, but in a climate where China's restrictive government isn't afraid to clamp down on thriving businesses when it feels censorship is necessary, challenges remain for even the market darlings. Let's go over some of the things that can sting the stock after Weibo steps up with fresh financials this week.

A blue Weibo map of the world with the continents drawn in white and fading, saying Accessed from 190+ countries worldwide on the right side and the words Public, Social, Aggregated, Real-time, and Distributed on the left.

Image source: Weibo.

1. The impressive earnings beat streak can end

Blow the market away and stock gains tend to follow. We've seen Weibo continuously land ahead of analyst profit targets during the past two years of the stock doubling. The past year has been particularly noteworthy.

Quarter EPS Estimate EPS Actual Surprise
Q4 2016 $0.28 $0.34 21%
Q1 2017 $0.21 $0.26 24%
Q2 2017 $0.36 $0.38 6%
Q3 2017 $0.45 $0.51 13%

Data source: Yahoo! Finance. EPS = earnings per share.

Analysts are holding out for a profit of $0.58 a share in Tuesday's report, a big step up from the $0.34 a share that it rang up a year earlier. Weibo only provides revenue guidance. 

Weibo will naturally need to surpass $0.58 a share to keep its impressive streak of beats going, but it also has to make sure that its top-line outlook and any insight into how margins are holding up find analysts confident in their 2018 forecasts. 

2. Revenue growth can start decelerating

Another major component of Weibo's monster run has been accelerating growth. Year-over-year revenue gains have increased for seven consecutive quarters, culminating with a jaw-dropping 81% surge last time out. 

The streak should end this time. Weibo's guidance three months ago was calling for $355 million to $365 million in revenue for the fourth quarter, up 67% to 72%. Weibo would have to land well ahead of its range to keep the top-line upticks accelerating, but Weibo's been up to the task before. The $320 million it delivered during the third quarter was comfortably ahead of the $290 million to $300 million it was modeling just three months earlier. It's going to need another beat on the top line, especially since investors have been spoiled by the guidance lowballing in the past. 

3. Don't underestimate recent government moves

Running a fast-growing microblogging platform in one of the most vigilant countries can have its setbacks. Just last month, we saw the Cyberspace Administration of China order Weibo to temporarily shut down some of its portals for spreading obscene and unauthorized content. 

Weibo and its peers run into these kind of hiccups from time to time. The latest episode took place several weeks after the end of the fourth quarter, but it could weigh on the revenue guidance it offers on Tuesday morning. 

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.