Conversation so far:
what sort of influence did Linkin Park have?
Linkin Park became the first rock band to achieve more than one billion YouTube hits.
Which Linkin Park songs are the most popular on YouTube?
Numb, In The End, and What I've Done have the most views out of all of Linkin Park's songs on YouTube.
What else is interesting about Linkin Park's legacy and influence besides becoming the first band to reach a billion YouTube hits?
Linkin Park has sold more than 100 million records.

Question: When did they achieve all this attention?
Self-contained rewrite: When did Linkin Park receive all the attention for selling records?