Seriously, these Things which we have been doing are truly neat. Libworm is no exception as it is a search engine for professionals or people who want information with a little merit. Libworm reminds me of something students would use at a college.
My experience so far involved me putting in a keyword...you guessed it, iPhone and the site came back with a few topics but the one most relevant was the Top 25 Medical Applications. So the system will probably not bring up exactly what one wants. This is why I compare this to something found at a school because the site I found was "credible," though it was not really what I wanted, still neat to read.