Craigslist revenue will they start charging for other ads?

This morning I posted an ad on craigs list and I am seeing some commerce implemented, although there was no charge, this is new to see a invoice type layout for the ad confirmation.

With the thousands of ads posted on craigslist.org daily, can craigslist stand to start charging? My guess would be yes, as long as the charges are fair, I would pay $.50-$1 for a simple ad. Maybe I could tie it to my paypal account.

Is Craigslist making money with the postings they do charge for? From their FAQ page, if Craigslist receives 2 million NEW job postings each month at a min of $25 each that’s $50 million a month! Can Craigslist really be making $50 million per month! WOW!

Q: How many job listings does craigslist receive?
A: More than 2 million new job listings each month

Q: How much are job ads?
A: $25 in Chicago, NYC, LA, DC, Boston, Portland, Sacramento, Seattle, and San Diego, and $75 in SF.

In addition a $10 fee for brokered apartment listings in New York City

Q: Is there a connection between craigslist and eBay?
A: eBay acquired 25% of the equity in craigslist from a former shareholder in august of 2004.

https://www.craigslist.org/about/factsheet

Another interesting fact!

Q: How much traffic does craigslist get?
A: More than 12 billion page views per month

Q: How many classified ads does craigslist receive?
A: craigslist users self-publish more than 30 million new classified ads each month