I have an auto-blog that is basically a news aggregate. I had around 30,000 posts and about 5,000 tags which caused my plug-ins and server to begin having issues. I decided to just keep the posts from the last 45 days as well as tags that were used more than 5 times and delete the rest. I was able to delete what i needed and saw immediate improvement on the back end of my site. However, I then noticed traffic started slipping. This wasn't because of missing links however because I know from my tracking that the only links people are entering are news stories from within the last two weeks at the latest. I then read that when you delete web pages that are indexed G starts collecting 404 errors from spiders or the sitemap and does not like that. So, to the point, is there a way to automatically make all my 404 errors become 301 redirects to my homepage or a page that says the item they are looking for is expired ? There is a plug-in I've read about called "objection redirection" that sounds like it would do this automatically so 404 errors are never detected, however I can not find an active download link and their website is never up. Any suggestions?