My site, http://www.sg-house.com is a modified phpbb forum. I change it to make it easier for people to post in, sort of online classified. Currently, there are about 300 posts from the users. I installed a few mods: - Able2Know SEO Mod (I changed the htaccess rewrite, to disable sid only for search engines, as I allow guest posts) - Printer friendly mod - I can't remember what mod is this, it create "search engine friendly" pages: http://www.sg-house.com/sghouse/ The last time I check (probably a month ago) the site has a over 100 pages indexed at MSN. Then suddenly, it drops to just 10 pages indexed. This is the MSN search result http://search.msn.com/results.aspx?q=site:sg-house.com One thing I notice is that the htacces rewrite seems to have some problem in my server. While it displays correctly in browsers, in Google Analytics all the pages writen from the htacces rewrite is shown as just one file. Will this affect the ranking? I have recently submitted the site to quite a number of directories, but the problem appears even before that. Any clue? Thanks. Note: same thing happen to Yahoo. I posted this on yahoo forum as well. http://forums.digitalpoint.com/showthread.php?t=105586 Google has about 300-400 pages indexed.