as far as few visitors are concerned, you should look into the SEO techniques for your site. But, yes, live help/support really makes a difference in converting those visitors into your customers. It becomes all the more important as you are into buying and selling through your site.
Through live support, visitors can clarify their queries. It also helps you in tracking your visitors. Infact, on our site
m2mhost, we have seen a considerable difference after installing an integrated application
liveperson. Liveperson not only has the facility of live chat but also live to talk, e-mail management and knowledgebase.