I feel that something should be done about data-structures. For instance, this question appears to include the tag just because it uses data structures. Also, we already have many specific tags for data structures (array, stack, tree, ...), so this one seems to be added to such questions as well.
Are there still legitimate uses for this tag? If so, should we just untag it from open questions (no need to touch closed ones) that aren't specifically about data structures?