I suppose a reasonable question is that since the maintainer of Transmission left the project sometime after a Maemo build of the October 2009 version 1.76 I am not sure how useful magnet links would be as the old DHT and PEX seem to have trouble joining trackerless swarms even with .torrent files especially behind NAT or with ISP filtering, this is not a problem with newer builds. I see mention of several people building V2.03 or V2.11 on the thread link below but not able to share since they are not the now moved on package maintainer.
http://talk.maemo.org/showthread.php?t=58952