I'm sorry somehow my message was sent before I was ready... I wrote:

Many users of Boost are in corporate environments. Many corporate environments block access to Facebook and/or >Twitter (mine blocks both) domains.

It'd be great therefore if Boost didn't move too much content there if equivalent ..

functionality is available on boost.org. I understand that many will think the problems lie with unenlightened corporate policies rather than boost, but the latter has a rich and noble history of BOOST_WORKAROUNDing the mistakes of others :-). Pete