Ask HN: What to do when friends of friends seek "hookups" for jobs at my org?

Social networks have made it easy for people whom I don't know to find out that I work at a well-known design agency. Friends of Facebook friends, connections of LinkedIn connections, and other distant acquaintances occasionally contact me to help them avoid having their resume lost in the shuffle.

I don't mind helping very close friends or other people I would feel comfortable vouching for. But I do mind advancing someone's resume if I've only met them once and/or they weren't particularly impressive.

It'd be nice to say, "Sure, here's the email of our HR guy. Good luck." - but people will always start the email to the HR guy with, "I'm a friend of [My Name], and he told me to send you my resume for the so-and-so position." I want to avoid this implied endorsement, because my professional reputation suffers when sub-par applicants don't get the job.

I also don't want to have to tell people not to use my name, because it comes off as rude or unwilling to help.

Maybe I'm hoping for too perfect a solution or trying to avoid the natural complexities of human interaction. If so, I can make a decision and deal with the consequences. But I wanted to check if anyone here has experience or advice in handling situations like this.

Thanks.