Not all start-up companies are created with the idea of seeing them through. Sometimes the start-up developer only plans to fatten the calf and sell it to the highest bidder.
This works out extremely well for both the seller and the buyer. Facebook alone has bought more than 15 start-ups in the last couple of years. Here are the top 12 tech start-up acquisitions of 2012.

Top 12 Biggest Tech Start-up Acquisitions of 2012
1. Instagram
Instagram acquired by Facebook, on April 9th, 2012, for 1 billion USD.

Instagram supports the iPhone, iPod Touch, iPad, and Android 2.2 camera phones.
2. Face.com
Face.com acquired by Facebook, on June 18th, 2012, for 100 million USD.

Face.com is a facial recognition tool that scans photos and tags them to their associated social networking information. So if you want to know someone social media info, all you have to do is take a picture of their face and upload it to this app.
This app discovered 11 billion faces on social media as of February, 2011.
3. Tagtile
Tagtile acquired by Facebook on April 13th 2012, for an undisclosed amount.

Customers who have downloaded the Tagtile app have to just tap it once and their social media accounts will be connected to the accounts of the company.
4. Glancee
Glancee acquired by Facebook on May 5th, 2012, for an undisclosed amount.
Glancee pioneers social discovery by helping people discover hidden connections around themselves and meet interesting people.
Thousands of people have discovered each other via Glancee so far. Glancee is now being put to use for Facebook’s 900 million users.
5. Lightbox
Lightbox acquired by Facebook on May 15th, 2012, for an undisclosed amount.
Lightbox provides an enhanced way to view images and attach captions to them. One can even run a slide show and navigate it with keys. Users can view larger image versions without leaving their current webpage. Lightbox dims the surrounding interface to allow clearer image view.
6. Karma
Karma acquired by Facebook on May 21st, 2012, for an undisclosed amount.

The best part is, if your recipient does not like your gift, they can customize it, swap it, or even donate it to charity. Karma ships the original gift to your recipient and takes care of the subsequent swapping and donation too.
7. Quickoffice
Quickoffice acquired by Google on June 5th, 2012, for an undisclosed amount.

These tools are compatible with MS Office programs as well.
8. Meebo
Meebo acquired By Google on June 4th, 2012, for USD 100 Million.

There’s a Meebo version for iPhone and Android phones as well.
9. TxVia
TxVia acquired By Google on April 2nd, 2012, for an undisclosed amount.

Google plans to use TxVia to partner with payments and commerce industries.
10. Amobee
Amobee acquired by SingTel in March 2012 for USD 321 million.

It comes with a proprietary platform which works well with any mobile type and mobile operating system, including gaming platforms.
11. HungryGoWhere
HungryGoWhere acquired by SingTel on 22nd May 2012 for USD $9.4 Million.

Users can search for restaurants based on what the place is recommended for, such as dining, drinking, chilling out or corporate functions.
12. Peekspy
Peekspy acquired by eBay’s subsidiary, Stubhub in March 2012 for an undisclosed amount.
Peekspy allows users to take a peek into 3D representations of venues that host sports and concerts. Based on the seating arrangements and the degree of visibility, people can book the best seats they can afford.
