It's totally free to post AD on freeKnock.com and it takes maximum two minutes to post an AD. First of all you need to registration on freeKnock.com and then you will be able to post AD, maintain AD, manage profile etc.
You can get your favorite products by searching on freeKnock.com like- Car, Computer, Mobile, Apartment, Land, Personal Item etc. You can also sale some of your new or used item on freeKnock.com
Please use meaningful title, description and photo of AD when you post AD on freeKnock.com