If you have a question about some Eclipse project, the newsgroups are your best bet.
If you’re not sure what group is appropriate for your question, post it on newcomer. Posters to newcomer are often redirected to other newsgroups, but newcomer is a good starting point since a lot of very knowledgeable people watch the group pretty carefully.
The newcomer group may be misnamed. While it is indeed for newcomers, it’s not exclusively for them. Lots of folks who have years of experience with Eclipse post their questions there.
The newcomer newsgroup isn’t just for newbies. Can you think of a better name?