The hardest thing to get used to with cohost so far is that if you repost something it shows up in the tags you use.
I don't know if I think this is A Good Thing or A Bad Thing but it sure is A Thing and I haven't quite decided how I should behave in response to it. Tags are very handy for internal blog archiving, and I don't want to lose that, but on the other hand I don't want to fill up tags with useless chatter. On tumblr people got around this by inventing personal blog specific tags (so if I was reposting an Andor thing, instead of tagging it Andor I'd tag it, like "eve enjoys Andor" or whatever). And that's fine as far as it goes, though it does mean you have to invent and remember a lot of tags. Hmm...