No, this baby boom will certainly not swamp Social Security system (sort of a bad joke for those that live in United States, but many other countries...most notably Japan...have an even more acute problem), but this baby boom is revolutionizing way that pay per click advertising is being spread across Internet.
One of early participants in this pay per click baby boom was Google, with its AdSense program. With this program, Google shares pay per click revenue with a huge number of individual partner websites that carry a few pay per click ads that are distributed by Google. In essence, this creates a whole bunch of little pay per click locations (websites) throughout Internet and hence term "pay per click baby boom".
Conceptually, programs like AdSense are similar to what computer hardware folks refer to a distributed processing. Instead of trying to draw everyone to a large pay per click search engine site, little groups of pay per click ads are spread widely across thousands of locations (websites) all over Internet.
Actually, this distributed processing or propagation technique is not limited to pay per click advertising. For example, Amazon uses a similar arrangement (called Amazon Associates) to sell products it carries on amazon.com and ClickBank has a sales program called CBAdwords which operates in a similar fashion.
According my trusty Ouija board, it seems likely that most commercial hubs on Internet will be shifting to this propagation concept as time progresses...all of those individual partner websites that carry message/proposition will constitute vast army of worker ants that keep queen ant alive and healthy.
From a pay per click marketing perspective, these programs make brilliant use of leverage while providing highly targeted prospects for paying advertiser.
There are, of course, some interesting things that occur as a result of all of this stuff. For example, consider what I call "cross fertilization effect": Suppose a person goes to yahoo.com and performs a search that leads them to one of my websites that happens carry Google AdSense ads and that visitor then clicks on one of those ads...the net result is that Yahoo natural search provided Google pay per click with some revenue! Aren't these fun times that we're living in?