Remember Google's ill-fated attempt to screw with your privacy?  Looks like Yahoo's trying to get on the involuntary "social network" bandwagon:

http://www.eff.org/deeplinks/2010/06/opt-out-required-prevent-your-yahoo-mail-contacts

With thanks to Kasandaro, who pointed me to caffeinepuppy's post here: http://caffeinepuppy.livejournal.com/214632.html

To quote:

LiveJournal has started snooping on outbound clicks, sliently redirecting outbound links through "outboundlink.net." This is enabled even for paid users, and the opt-out is so hidden/out of the way that what they're doing ( Read more... )