I know some sites where we can sell all products online : ebay.com sify.com and any more ? What about selling services (like one in our trade section) ?
there are hundreds. It depends on the types of products. clickbank.com and paydotcom.com are the most popular marketplaces for digital products. It really all depends on what types of products you want to sell
SEO Consultants should really have their own sites. A simple domain, hosting and site combo will do. Add your portfolio etc to it. Contact details, costs. If you don't have a host, look at my sig for a link.
I just started a new marketplace forum dedicatedly for this only... URL: click here Just started 3days back and planning to make it big dont have all posts but after all it depends on the posting only that will build the forum