Quote by: ankur_mmy
Do we have a Plugin in geeklog which will list all similar posts on the site at the end of each article?
If you're talking about story content - a rudimentary functionality is already in there. For instance from the headline story:
Look lower left before 'Trackback', you will see 'Whats Related'. Of course - this is all generated from the story meta and content itself, eg. there is not a search engine analyzing the relative similarities between this story content and others - such a thing would be very difficult to do.