Noun - File Sharing Service
Noun - Something or someone which endlessly spews rhetoric, slogans, or solicitations
Adj - Endlessly spews rhetoric, slogans, or solicitations
"Grokster is an exceptional way to provide yourself free things at the cost of spyware and constant advertisements"
"If that grokster tries to sell me anymore of his religion, I'm going to crack his spinal column and drink out his precious marrow"
"Those grokster Girl Scouts always trying to pimp me cookies at this time of the year"