Advice from a mistaken user of it... RUN AWAY, DON'T GO NEAR IT.
My wife installed Limewire whilst trying to find a taped copy of an Alias episode, she's a rabid fan. Thankfully I got there just as she was about start downloading the matches for "Alias" "Episode" .... matches like "Alias..Episode.. MMMMMF.. Hardcore.. ". Nothing but porn. Porn. And more porn.
After deleting the program I ran AVG and Ad-Aware and got plenty of hits.