I love last.fm
It's basically made my mp3 collection redundant over the last few months (no mean feat, believe me) but until today I hadn't junked it completely because I didn't have a way of listening to last.fm on the move.
Yesterday I however I received my shiny new Nokia E71 on a slightly different contract from 3 which gives me full power to use the internet as I like (well subject to their fair usage policy anyway).
At the same time I noticed the new INQ phone from 3 also supported last.fm and went hunting for a last.fm mobile app, and that's when I found mobbler a free, open source version of the last.fm scrobbler for Symbian based mobile phones i.e. those made by Nokia
I'm glad to say it works really well and as a result I'm going to archive the mp3's and free up a good 100 gig of disk space - woo for social radio!