CC-CEDICT is a collaborative project relying mainly on volunteer effort. For more information about CC-CEDICT see the CC-CEDICT wiki.
You would review additions and corrections submitted by any users of CC-CEDICT (such as the MDBG dictionary). You should use multiple reference works to verify whether the submissions are correct or not. In case of doubt, you can ask other editors on the team for help. Depending on your skills and interests you can decide if you want to work on only the simple cases or also on the complex cases.
The excitement of working on a dynamic team of people committed to improving tools for Chinese and English learners. And of course a warm fuzzy feeling inside knowing that you're doing great things to help people all over the world.
We look forward to having you on the team!