To get more visitor firstly you have to write fresh, unique quality content. When you post any fresh and unique quality content, Google index your post very quickly and on the other hand if you post useless contents then your post can be indexed after 6 months. And the meaning of unindexing your post is less visitor. So the condition of quick indexing your post is to write quality contents without any kind of copy-paste.
2) Sitemap Submitting : Sitemap is the extract of your blog. By this search engines can read your all posts quickly. So, sitemap is very important for a blog. Submit your blog’s sitemap to all search engines including Google, Yahoo, Bing. You can use the “url fetch” option for quick indexing your posts.
3) Backlinks : To get more visitor as well as quick indexing, create some quality backlinks on similar sites. You can also comment on similar good quality sites to get powerful backlinks. You can do some other things like guest posting, join forums, submit rss feeds to rss directory, making external links to get more backlinks.
4) Social Networking : Now a days social networking sites are good way to quick indexing your posts. Search engines regularly index these social networking sites. So if you share your links to these sites your links also be quick index by search engines and in the same time You are getting some direct visitors from social sites.
5) Site Pinging : Normally ping is used to warn spider/crawlar/indexer. By this, search engines can know about any new posts published on your blog. Also there are many free websites to ping your blog posts quickly.