This page is a demo of the capabilities added by CoBlocks. CoBlocks is a GoDaddy sponsored plug-in that WorPress.com includes in part. More blocks are available for the most expensive WordPress.com plans. The ones shown below are included in the free and lower cost plans.
I have to say I am, for the most part, underwhelmed…but I dig the gradients you can add to the buttons. Also the light-box features on the galleries are elegant.
My only other comment is that since CoBlocks is a free plug-in on WordPress.org sites it doesn’t make a ton of sense that WordPress.com doesn’t let one use the full set of features.
This is called the “Hero” block:
XingfuMama Blog
This, that and the other. Mostly photographs. Check out my weekly challenge, Pull up a Seat, and think about joining in the fun, or check out my gallery of images for sale.
Buttons block
This is called “Click to Tweet”
I do not have a twitter account and have no idea what this will do if you click on it, but I wanted to have a full set of examples for CoBlocks.
I don’t give a tweet, but maybe you do.
Tweet
This is called “Dynamic HR”
It adds a re-sizeable spacer between blocks. Style options are: dot, line, full width. Dot is shown below.
This is called Logos and Badges
I don’t know what the point of this one is. There seems to be zippity-doo-dah documentation for it.
This is a Pricing Table block
This is a CoBlocks Masonry Tiled Gallery
King Penguin wading in the sand. 
King Penguin crowing. 
King Penguin coddling an egg. 
XingfuMama 