Hello
recently i bulit auto blog the source is RSS from articles sites in the first 3 months i get 10000 pages indexed in google and 100000 pages indexed in google blog search google was index my blog every minute but now i don`t know what is happing and why i loose my indexing pages in google now i have just 2000 pages in google

and no traffic from google 

i got PR 2 i`m worry i will loose my page rank and blog please any one help me
?
recently i bulit auto blog the source is RSS from articles sites in the first 3 months i get 10000 pages indexed in google and 100000 pages indexed in google blog search google was index my blog every minute but now i don`t know what is happing and why i loose my indexing pages in google now i have just 2000 pages in google