Check out the real engine used by most of the other sites: ITA Matrix
Check it out for yourself at: http://matrix2.itasoftware.com/ [5]
Links:
[1] http://pulse.veltsos.com/category/it/internet
[2] http://pulse.veltsos.com/category/it/search
[3] http://pulse.veltsos.com/category/it/web
[4] http://pulse.veltsos.com/category/it/world
[5] http://matrix2.itasoftware.com/