I'm using Cyberage and I make galleries with at least 50 pictures, because then I can aply for the prefered site program. An Advantage of this program is that you are allowed to use an special Cyberage script. When you use this script members of Cyberage who are logging in in your AVS are guided over an sponsor page of Cyberage. You get paid $0.05 for this. This means that You make $0.07+$0.05=$0.12 from a person who is visiting your gallery!!!
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Cyberage:
http://aux.avsofchoice.com/webmasters?refwm=4980574