With over 300 million users on Instagram it’s surely the largest social media site next to Facebook.
Gaining Likes on photos has been a huge motivating factor for the sites growth. Using applications like http://www.instaliker.us to buy Instagram Likes is a great tool to use.
With users constantly posting selfies, family dog photos and professional photos to their pages everyday, using hashtags has been a great way to organize the content.
Using hashtags has helped to attract new followers and gain new exposure on the network. Getting more popular using the service requires time and patience, constant interaction with your commenting fans and liking of other peoples photos.
For all the latest information about Instagram and how to get likes you should read the wiki: http://en.wikipedia.org/wiki/Instagram