Are you a good writer? Do you have a few minutes to spare? Why not update some tags and get the tag editor badge!
Our tags generally have some pretty good descriptions. However, we could do with a review. Most commonly, non-pluralised tags need to be found and flagged/fixed (eg trains is correct, train is not).
See any synonyms you could suggest? Consider it.
We have a lot of tags that are quite detailed, while others, eg cambodia had a one line 'it's a country in SE asia' style tag. We could be adding in details, maps and more.
'things to do outside' for [tag:outdoor activities] is another one that could be improved.
I could edit them, and have done so for many, but if you've not gotten your badge (only 90 143 have!) maybe it's time to go for it, and we can all benefit as a result :)
I went through and I think the first blank tags start on page 12 with night-transport.
Go forth!