By bother he meant spend a bunch of cash, not @reply to people on Twitter. They can hire your girlfriend to submit stuff and comment on reddit all day, but that doesn't give reddit any revenue.
My girlfriend doesn't work the spammer role that you seem to be envisioning. Her job is to discover an audience that is actually interested in the products her company offers and to reach out to them. Part of that job is to manage the Facebook presence for products that have well over 100,000 followers. Another part, as I said, is to find relevant blogs and other websites frequented by visitors of an appropriate demographic as a platform for their ad campaigns.
I brought real information to this thread. There was no reason whatsoever for you to shit on that.