not sure if this is actually a good design decision on our part, but we are consciously excluding a global full-text search from cohost for the time being, because we think global full-text search as a feature is the sort of thing that leads to context collapse and dogpiles out of proportion to the benefits it provides. if you want your post to be searchable by people who don't follow you, in general, we suggest you tag it. (and you can always go back and add tags to a post after you post it! they'll show up in the tag page just the same.)
