We've got some pages that implement a gazillion Facebook iframes (via their JS approach, but they still iframe everything in) and, quite apart from just having to trust them on things like this, it makes everything slow as a dog. Latency is one part of this, clientside JS performance in older IEs is another (and no, dropping support has been ruled out - one of Australia's biggest media brands)
Anyone have thoughts on sandboxing to protect against things like this, or success stories re: performance optimising FB integration?
We do, but have found - particularly in IE variants - that performance is so haltingly slow that we may as well not bother lazyloading at all.
There are also some Flash of Unstyled Content/Unloaded JS issues - but we should probably fix this on our end. The challenge with that is Facebook have the freedom to change iframe dimensions at any point, thus breaking thousands of pages again.
Anyone have thoughts on sandboxing to protect against things like this, or success stories re: performance optimising FB integration?