While searching for creative free tools for social media--to make blogging and social media more engaging--I came across Pinstamatic.
Although Pinstamatic is designed to help you make dynamic visuals for Pinterest, it's one of those tools for social media you can use for any social media site.
A cool feature is adding text to colorful sticky notes (I always have liked sticky notes--hard to resist all the fun colors!). You can also add text to an image that looks like a chalk board (see below).
One really unique feature it offers is letting you share your favorite music on Pinterest. Your friends can play songs directly from your board.
Try this one: Tagxedo. Your just type in your website and get a really cool infographic-like picture of your home page.
I also like Pinwords--you upload photos and add your own text!