You may rest assured that this situation will not last.
The web is best when it tears down the friction that separates information from the people who need it. The folks who work hard mining data manually today will be flipping burgers in the near future. The skills required to move forward are unlike the ones being taught. Contemporary sourcing is a dead-end occupation with little in the way of transferrable skills.
Next generation recruiting is about relating intimately, not about mutual discovery. It's about fidelity and long term value exchange, not one night stands. It's about data that updates itself because the relationship is constantly working. Finding each other? Easy. Building an enduring relationship? Hard.
For a while, sourcing will be a high dollar, easy pickings income source. But, in the relatively short term, the need for the expertise will evaporate. Former sourcing luminaries will be familiarizing themselves with the alarm on the French fry machine and the relative difference between Rare, Medium and Well done.
Evaporate, as in "What air freshener scent would you like with your car wash?"
So, what do you do if you're a sourcer (or any kind of Recruiter, for that matter)?