I like #hashtags because they're a successful #folksonomy. but they've got some big flaws. ⓵ no description or summary or anything. catching a new tag can be *work* just to figure out what it means sometimes. ⓶ no proximity. eg: I'd like to be able to tag plus codes (OLC) and have people looking for a larger area also find my specific toot. there are lots of ways that toots and tags may be adjacent to each other.