Whats this about the 7 drop spidey not exhausting for his ability? I thought the arrow meant you had to exhaust the character to activate the ability.

no the arrow just means that its an activation power. activation powers require some kinda payment for a reaction. you only exhaust if it says "Activate, ...... >>> ....."

No, the arrow means it's a PAYMENT POWER, which requires a payment of some sort.

An ACTIVATION POWER is a type of payment power where you have to activate, or exhaust, to pay for the power - and which always has the word 'activate' as part of the payment.