Broadway - 1:40 am on Nov 18, 2012 (gmt 0)
Thanks for the replies.
The text-only really is a good idea and something that didn't cross my mind (maybe for just for selected ad slots).
When I first started looking at page-loading times, I thought I was going to end up taking the FB stuff off (AddThis really).
Both FB calls and Adsense showed horrendous load times but taking either one off individually didn't help page-load performance. It seems their sloooow loads (since from different servers) don't compete with page-loading resources and therefore their events take place in parallel, not sequentially.