We have featured a number of different ways here on Geeky Gadgets to allow you to easily create Spotify Playlists. But a new creation now looks to use your Last.fm history to take the pain out of Spotify playlist creation. SpotiLast has not been built by either Spotify or Last.fm but uses their API scripts to connect SpotiLast to both music services.
Once you are connected the SpotiLast app pulls in your Last.fm suggestions, and will automatically build you a playlist. From which you can then click on any song to fire up the Spotify desktop player and start listening. You can give it a go by visiting its website SpotiLast. But I think due to the recent attention it has gained, the new service might be struggling to cope.
Source: SpotiLast : Lifehacker