Conversely most e-mails from recruiters get ignored. I'd be far more likely to take an e-mail that I know someone had to pay to get to me seriously, on the assumption it'd likely be better targeted.
That might be an argument for premium job sites like TheLadders advertised as ($100k+ jobs). It seems like they've backed off on that branding, though. So maybe that doesn't work out well in practice?
