WTP is a platform and so adoption by others is a major goal of the project. You are a WTP adopter if you are a commercial vendor or an Open Source project that is using or is planning to use WTP in one or more of your products. This page lists information for WTP adopters.
The WTP project gives high priority to bugs that promote adoption. If you are an adopter and need a fix for an upcoming release, please follow the hot bug process to request that your bug be placed on the Hot List. We can't guarantee that we'll fix every Hot Bug, but we will give them high priorties.
The WTP API Policy can be found on the wiki.
The PDE, in the Eclipse Platform, provides tools to scan your code to see what API, and non-API, your code uses from WTP (or other Eclipse projects). See Eclipse Help and various Eclispe wiki pages and blog entries for details and ways to get started.
As an adopter, you can make use of these scan reports in several ways, mostly concerned with non-API use: