140 friends - 7 St. Basil, 7 TA, 2 Star Gazer, 1 Virgo being actively worked or recently worked (no players donating to a building's last finished level that I know are inactive, and 3rd or higher of the buildings with the latest level either locked or no fp placed on it).
Breaking those numbers down further:
500M+ points - 1 SG
100M+ points - 3 SB, 2 TA
50M+ points - 1 SB, 1 TA, 1 VP
50M- points - 3 SB, 4 TA, 1 SG
Make of that what you will, since some may be being built for GE5, but more likely is just coincidence due to the low numbers. I don't see any of those buildings being what I'd consider "popular".