Why does this question appear to be unanswered, as it is, obviously, answered? The answered was added for 4 days, so it can hardly be a latency problem...
A question is considered answered:
accepted answer, or;
The question you mentioned appear as unanswered because the answer don't have any up-vote.
Just because a question has an answer doesn't mean it has been answered. The question you cite is a great example. The OP is asking how to pull in the Description field from TFS into MS Project. The answerer suggests using TFS Web Access instead, which, while a so-so suggestion, does not answer the question. At least, that's why I didn't upvote that particular answer :)