Hey Jeraman,
The only classified's I have ever done were free classified ads. Which many would recommend as a way to get started till you start making money. Honestly though...if you do so...set up a seperate e-mail account because you will get a lot of spam mail.
I have yet to gain any subscribers from my free classified's.
Manny Rodriguez
OvercomeFinancialDebt
www.overcomefinancialdebt.com