[Boost-users] download from sourceforge?

I followed the link form boost.org and then through sourceforge. But sourceforge directed me to: http://downloadbud.com/?adprovider=sourceforge_fwint&source=fw36_300x250-download-display-6352064 The link is an executable! I've never heard of 'downloadbud'. Not a big deal for now, I'm running with 1.58. But I'd like to get the latest of spirit x3 before I ask questions on the spirit list that may not need asking. Is there another source for boost? Or, is this executable actually a safe extractor? Sourceforge handing over an exe when it should be be a package seems just wrong... Thanks, Dan.