I've been doing Funnel building and Search engine optimization 5+ years. Helping my self and Internet marketing space all the time Build sites like coatq com Have worked with many Word press blogs and seo plug-ins to reduce the price that other guys charge for seo I can help you start up and show you how seo bring you the most profits. or i can build marketing funnel to brand you.
If the Market place provide user profile and paid sponsor add best way to target is using tags keywords and long description of what you offer... and that way, when the marketplace do paid ads your service will choose by them to promote so you get free promotions..
but for that you have to build your service reputation and good rating to show up. hope that give you a idea.