These should be services that can be performed completely online, without the need for the physical presence of the customer. The website is relatively new and is gradually evolving, perhaps this is place where you will come across a potential customer who does not visit other platforms.
When posting an ad, all you have to do is choose in the type of advertisement that you are looking for a job or customers. You can offer your services here: Post an Ad (free)
Why is posting ad free? And why couldn’t it be.
Testing if comments work. It’s great you do not have to pay for inserting ad.