I'm just curious if there's a general rule... Sometimes at the end of a sentence "too" is preceded by a comma, and sometimes it isn't.
For instance, would there be any difference between these two sentences:
"I went to university there, too."
"I went to university there too."
I have a hunch that it signals the difference between "I went there just like you," and "I went there in addition to another university." Thoughts?