Online Since 2008
More than 6.000.000 members
NeoBux 
is a free, worldwide service, available in a many languages. Allows advertisers to promote products and services to reach potential customers by displaying ads on their website.
Campaigns start from $5 and can provide you with detailed statistics, country and age filtering. All features are subject to the selected type of advertisement. Depends on what you need, where you want to be exposed and to whom.
This is one of the oldest businesses, very legit with high standards.
If you want to make some extra cash with Neobux, click to read my review