If you want to publish (and embed) a Google doc into a blog post this is easily possible as Google docs provides the embed code. The process of embedding informs you that the underlying data will be made public and read only. Which is kind of the point of blogging about some data you have created. Here is a chart I put together for a roadmapping exercise I am currently completing.
What are my data sources for putting together this graph? It is an accumulation of a number of things; 25 years working in technology and being an educator graduate level studies in Education with a focus on Information Technology, constant monitoring of RSS feeds, blogs, online publications, a deep curiosity of the subject of educational technology and the reading a number of reports on the subject, in particular; Horizons Reports and the exemplary work of Stephen Downes.