The next step is to contact the poster. There are a number of ways you could follow in-order to initiate a conversion viz; call, email or chat feature.
While communicating via call or email does not require you to register, however, you're required to sign up before using the chat feature on the site. One advantage of chat feature is that it enables you to track your conversation with a poster before and after transaction and it will help us investigate in case there is a dispute.
Please read our Disclaimer on transacting with various users using our website.