I'm really are a sucker to flea markets. I love them. And I can actually buy clothes at a really cheap price because they don't have to pay for expensive rent . & we can actually BARGAIN them until it goes superlow price !
ok so the only flea market I ever went
1) The Curve
2) Seasonal flea market such as Bijou Bazaar , Threadszoo
3) Danau Kota Night Stall
I knew about the Amcorp Mall, Mont Kiara , but didn't get the chance of going there yet because I'm not staying anywhere new PJ.

So anymore input and opinions ? Would love to hear them! 
Oh and I heard there's a new bazaar going on at Stadium Bukit Jalil, it started last Saturday and it's also on going today, but didn't get the chance of going there, yet

bijou bazaar website

Next bijou bazaar is @ Soho KL
Date: 14-15 February 2009 (Sat+Sun)
Venue: Soho KL, Solaris Mont'Kiara
Operating Hours: 2:00pm - 10:00pm
Oh and Danau Kota Night Stall (pasar malam) is at danau kota near setapak.

Hi, im searching for more flea market to open up my booths. I've been to A:Fair weekend, Big blue house, 3K and miss the recently Bijou bazaar. If anyone got info on upcoming events, do pm me aite.

Oh, i will attend the Youthopia next week and A:fair weekend too...

Here is the contact and website for A:fair weekend... http://www.afairweekend.com/

Contact Marlena, she will able to assist you in setting up a booth in their future events. For youthopia, i dun think there are anymore available spots left.

Google around, you can also try at 3K Subang.