Following the previous post, lets see if sampling matters.
This graph shows a few episodes of Euromaidan communication. It features QAP correlations for likes and betweenness (keep in mind, that QAP is about differences in likes/betweenness across nodes i and j) for a particular week. The correlation is quite strong, however, a regular sample overestimates it.
ps. a sample correction will be discussed in further posts
Graph: QAP correlation between likes and betweenness.