The favorite posting, by a large margin, is:
"Varieties of triangles -- by Guillevic" posted on October 13, 2010.Three other postings fall into second place:
"Mathematical Limericks" posted on March 29, 2010,
"Loving a mathematician (Valentine's Day and . . .)" on February 12, 2011,
"Rhymes help to remember the digits of Pi" on September 2, 2010.
Two more-recent and popular postings are:
"The World is Round or Flat" on January 8, 2016,
"Celebrate Math-Women" on March 2, 2017.
The list of labels in the lower right-hand column of the blog gives the names of numerous mathematicians and topics that are featured in the blog -- and one may click on any label to retrieve the posts. Additionally, the blog's SEARCH feature may be used to locate postings on a particular topic of interest.