4 letter .com domains - Where to Sell?

[dannbkk]

I have a portfolio of 4 letter dot com's where is the best place to sell these?

 

[domainita]

You can sell in this forum too

 

[pcx111]

I tried to read all the rules, but my eyes wore out. Can I ask or mention a domain name that is 3 or 4 letters?