If you were looking for confirmation that Facebook, Inc. (FB) can still grow despite the emergence of Snapchat, the company's Instagram photo-sharing platform has just provided 600 million reasons.

Driven by multiple new features such as Instagram Stories, its picture and video slideshow feature helping it gain popularity, Instagram announced in a blog post on its website Thursday that its user base has surpassed more than 600 million. 

"A lot has changed this year, but the Instagram community and the diversity of expression it provides has remained consistent," Instagram said in the blog Thursday. "Additionally, with updated safety tools that give you more control over comments and other parts of your experience, we’re working to make Instagram safer than ever for connection and self-expression."

As it stands, not only has Instagram increased its member total by about 100 million since it last reported its member total in June -- at which point it crossed the 500 million user milestone -- Instagram has doubled its user total in the past two years. It had 300 million users as of December 2014 and 400 million users as of September 2015. 

Beyond Instagram Stories, which has proven to be a popular feature, Instagram has made safety of the platform a priority. To combat the rise in abusive and negative comments, known as trolling, in September Instagram updated its safety tools, giving users more control of the comments that appear on their pictures and videos.

And given the momentum it now has established, It's possible Instagram's user based can grow to 1 billion in the next two to three years, especially when factoring Facebook's 1.8 billion user base, Facebook's cash and other projects such as VR and AR that should complement Instagram's photo and video capabilities. 

Facebook shares were trading 0.10% higher Thursday to $120.35. The shares have risen 15% year to date, compared with a 10.35% rise in the S&P 500 (SPX) index.

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