It seems like quite a few 4E questions are being answer with a quote and link from the D&D compendium. Whilst these answers are perfectly accurate, I'm not sure how useful it is as an answer in some cases. Are these General Reference?
No, these are not General Reference, as described on this SO blog.
General reference: this question is too basic; the answer is indexed in any number of general internet reference sources designed specifically to find that type of information.
Following the flow chart in the blog, and replacing an internet search with a search of the D&D compendium many of the questions would be considered General Reference. However, D&D compendium is only accessible to those who have paid for the Dungeons and Dragon's Insider subscription (DDI), and thus is not available to everyone. It is worth bearing in mind however that you should, when using the DDI as a source always (where practicable):
Give a quote from the compendium.
List the Primary Source of the information, be it a Dragon Magazine, a Splat book or otherwise, as well as the link to the compendium.
I think these may be general reference in some cases.
The DDI Compendium and d20 SRDs count as a general internet reference source for someone who plays that game in my book (especially because they basically cover the rulebook the person should have read). If someone asks a C question that's straight out of K&R on SO, it gets closed (and should).
If there is hunting around and interpretation involved, then it's fine. If it is just a black letter thing - "What power does a sorcerer get at third level?" then it's close as general reference.
When answering using an external source, you shouldn't just link it - you should link it and cite it. If all the answer requires is a link and a cite, however, it may be a warning sign that it's GR. I tend to not come down too hard on GRs as a mod, but the second someone opens a bunch of them - revealing they are either rep-whoring or a complete dumbass - they'll go tout suite.