Welche Bedeutung steckt hinter der hier vorgestellten Vokabel aus dem Bereich Marketing?

'Have you seen the customer feedback on our website?' 'Funny you should ask: I noticed that the number of posts has mushroomed from an average of 3 per day to 100!'

to mushroom

Do you know what it means?

• to become negative in tone
• to demand a lot of attention
• to multiply fast