Tags are words attached to a goal to describe it. They make it easy to find similar goals.
Some people call tags "keywords". They're the same thing.
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SuicideAlly wants to Give blood
be in a band
stop biting my nails
watch all of the L Word episodes back to back
write something worth reading
Build a bar
Margaret wants to lose sixty pounds
lose ten pounds in one week
be happier with myself
gain more muscle
make friends
teach someone to read
play Mario Brothers 3
cook more
be a hair model
Make new friends
Get up when my alarm goes off
work for the CIA
Learn Portuguese
shop vintage