It's not all that hard to get someone's number. Tell a FOAF that you lost it, look up public records, call their work & say you need to speak to them urgently.

It's not all that hard to get someone's number. Tell a FOAF that you lost it, look up public records, call their work & say you need to speak to them urgently. Especially easy if the victim hasn't told everyone that they're being harassed. Look at how abusers will create fake Facebook & twitter profiles to sully someone's name - this is just offering another vector for malicious behaviour.