Google indexing algorithm changes over time and now google changed its algorithm for indexing the pages on web.The main changes include url removal with in 2 to 3 days after getting indexed i'll explain all the stuff in detail.
Google always wants its publishers or website and blog owners to have good content with good number of keywords and good keyword density but now it needs some thing more.
I have always been a great fan of google and i always type my own articles with good number of keywords and google indexes my page with in one day with out and problem and now i found that google is indexing my pages as usual and removing my indexed page with in 3 to 4 days and i don know why they are doing so.
It may be because of the increasing number of webpages and they wanted to remove the unwanted.So i need to know how to keep my webpage hang in there in search engine results for long time.Pls type your comments and your suggestions in the comment box right below the post.
One more thing about the indexing algorithm is taking under consideration is your site map so take care you site map is with out any errors and well use web master tools to get your site indexed faster.