Turning LJ into Usenet
Short, concise description of the idea
Add a tag to every entry, and then allow people to search LJ based on them.
Full description of the idea
At the moment you can add up to 5 tags to your memories, so that you can then find the ones you're interested in. I think it'd add to the fun (and usefulness) factor of LJ if all entries had these tags, and users could search by them. Imagine being able to call up all Tolkein entries in the last day, or all Iraq posts, or all Transexual posts. It'd be like having a kind of dynamic newsgroup. Or like having a community by default (if you have 5 topics for your entry, then you're effectively crossposting to 5 communities and posting in your own journal). It would also be useful for finding people that you wouldn't necessarily bump into. I'd love to be able to sift through the posts on politics and find people saying interesting things. I originally favoured pre-defined topics, but LJ doesn't use these anywhere else, and it would be more interested to see what topics spring up instead, as people deliberately group themselves together.
An ordered list of benefits
An ordered list of problems/issues involved
An organized list, or a few short paragraphs detailing suggestions for implementation