I am not sure about these free blogs, but if you can add code to a page and the footer via a widget, then the process is the same as WordPress.

I did it after learning a bit, you can take a look, and I removed the widget of google +, now I am completly advertizing steemit. ☺

Great. What's the url again?

It looks good there. Thank you for testing that on blogspot!
Screen Shot 2018-03-21 at 3.52.51 PM.png

Coin Marketplace

STEEM 0.22
TRX 0.07
JST 0.029
BTC 20272.64
ETH 1150.41
USDT 1.00
SBD 2.97