
Every year, thousands of promising startups are created on the Internet. Already in the first months of their existence, some have time to go broke, some barely reach the level of self-sufficiency, and units begin to bring good profits. Of course, it’s far from being a fact that the projects presented below will become new Facebook and Twitter in the future, but it’s still worth a closer look at them.
Instagram')

Launched just last month, Instagram, with the speed of sound, undertook to win the love of photo-enthusiasts, and, most importantly, investors. The project is a regular image editor for iPhone, but this did not prevent him from collecting 100,000 users in the first week (now the number of downloads has exceeded 1 million)
Quora
Launched in 2010, the Q & A service owes its popularity to quality and professional discussions within the network. All the comments and advice given by really educated participants, which only cost names such as Reed Hastings, Mark Andressen, Craig Newmark
Formspring
On the other side of Quora is Formspring. The “chip” of the resource was the complete anonymity of the participants. Naturally, in this case it is difficult to speak about quality, but the creators of a startup took a course on the quantity, which has now been converted into 1 billion questions.
Kik
The functionality of this cross-platform application, frankly, is not much different from the standard BlackBerry messenger, however, in the first three weeks, Kik gained as much as 2 million users. RIM was offended by such growth and blocked the application in its network
Getglue
The service allows its participants to make "marks" and evaluate the viewed movies, music and books. Although in comparison with other start-ups of our list, GetGlue and the old man did, but he did not fire long ago. And all thanks to the porting to the iPad, Android, iPhone
Shopkick
Geolocation services became a real hit of 2010, and Shopkick is now often called “Forsquare for shopaholics”. Walking on the "promotional" shopping user will get points, coupons, free music and a bunch of nice bonuses. An interesting idea, for the implementation of which in Russia so far no one has taken :)