You can now sell/promote your stuff effectively by posting free ads on the best 30 Singapore classified ads sites. The following link contains a table that lists these sites according to their popularity ranking. It also includes essential information such as registration requirement, number of photos allowed, maximum duration of the free ads, and the free ad categories.
For the buyers, a classified ads search feature (that allows you to comb through all free ads on these sites at one go) is also included.
Check out the Free Singapore Classified Ads Sites now!