PayPerPost (PPP) is a website which helps content creators such as bloggers find advertisers willing to sponsor specific content. The advertisers create opportunities ("opps") that describe the content they are looking for (e.g. feedback, reviews, buzz, creative, video). The bloggers (sometimes referred to as "Posties") then choose opportunities in their area of interest.
Java is a general-purpose, concurrent, class-based, object-oriented computer programming language that is specifically designed to have as few implementation dependencies as possible. It is intended to let application developers "write once, run anywhere" (WORA), meaning that code that runs on one platform does not need to be recompiled to run on another.
A free software license is a software license which grants recipients extensive rights to modify and redistribute, which would otherwise be prohibited by copyright law. To qualify as a free software license, the license must grant the rights described in The Free Software Definition or one of the similar definitions based on this.