I spent a couple of hours adding tags to threads in this forum that have a substantial number of postings and at least one submission from 2008. For more details, see
this thread.
I'd ask people posting new requests to the Suggestions forum to consider adding tags at the end of their submissions. Please try to stick to broad categories like genre (romance, comedy, mystery, ecchi, etc.) as much as possible. Requests of the "more shows like X" variety should probably include the root show title as well, since someone searching for, say,
Zero no Tsukaima might also be interested in a thread about other shows like ZnT.
For everyone else, please help tag this forum by adding your own contributions. Anyone can submit up to two tags for a thread; the OP can include five. Tagging the Suggestions forum may eventually help reduce the number of redundant requests submitted here.