Craigslist - How Quick 2 Get A Reponse?

How long does it take on Craigslist to get a response, meaning someone to email you for more info?

I posted an ad about 15 minutes ago, and now there are like 10 ads on top of mine.

What are the chances someone is going to scroll down to my ad & email me now.

Just wondering if this is typical or not, its my first post ever at craigslist.

I posted in the computers category, for a very populated city...

A new post appears every 3 minutes it seems like.

Wonder if anyone is having any major success when there is so much competition...

Well you dont always have to post on major cities you can post on a few minor cities and you might get better response