I think and possibly Nite would agree that this program is the equivalent for lyric writing that painting by numbers is for artists. Top painters do not need to paint by numbers they can start with a blank canvas and produce a masterpiece.
Whilst all the things like rhyming, flow, meter etc are part of a lyricist's craft he should not need a tool to do this for him it should come naturally. I also think that the essence of great lyric writing draws on skills which has nothing to do with such a program.
That said any tool that people find useful is well worth using.

Lyrics should be conversational and contain words that most of us easily understand......if we need dictionaries or thesaurus and syllable counters etc we are probably making fundamental errors in our approach. JMO.

http://www.soundclick.com/bands/songInfo.cfm?bandID=687727&songID=5238055