I also noticed that PageSpeed doesn't seem to like my site connects to so many domains on page loads.
I have added "AddThis" (similar to ShareThis and other social add-ons) to my site. The idea is while most people use FB or Twitter, there are over 300 more social sharing sites and this widget allows users to access all of them. So now my site has 3 connections for loading 3 separate social sites.
My question is...are there any drawbacks to removing the fb & twitter widgets that come by default with XF in the Share This blocks and replacing them with the AddThis widget that performs the same function? https://www.addthis.com/get-addthis