As a blogger and Youtuber, I use those tools to promote my work over the web. The main issue is that my posts get lost into thousands and thousands others and getting some exposure is really hard.
Last week, I was exploring the web to find some place where it was a bit less crowded and where the community would be friendly. I've found one called Vingle.net (http://www.vingle.net/patrickballeux)
There is an iOS app and also an Android app which makes it easy to share on the go. The interface is nice and the basic idea is that you create cards having pictures and links to share with the others. I'm slowly building my account with Vingle. Of course, Vingle.net is also available in your favourite browser.
I like the card idea where you can join pictures with you link and some text. It's then easy to share the card with others, Twitter and Facebook.
It's a perfect mix of Facebook, Twitter and Instagram.
Come join us an don't forget to friend me!