i've deleted over 1.000 pages from my website (which has 50.000 page). On deleted page i've posted a message like "removed or not found page" Are these pages treated as duplicate content now? At 2 weeks after this operation my traffic dropped from 20.000 uniques/day to under 1000/day.. can this be the problem? was my website banned/penalized? how can i get my previously rankings?
these pages was indexed but i've deleted them because there was casino/gambling/etc related.. now the google indexed around 50 pages with not found error message and the website looks like is penalized.. can be any connection between these 2 events?
if you redirect deleted pages to the main site it will be better make some changes in .hta and all will be done. Regards Tehmina