Last.fm is a comprehensive music platform that allows users to play music, discover new artists and track their listening habits. The platform integrates with popular music streaming services such as Spotify and YouTube for seamless playback options. Users have the ability to switch between different devices and platforms within the Last.fm interface, enhancing flexibility and convenience.

A standout feature of Last.fm is its scrobbling function. Users can connect their Spotify account to their Last.fm account and scrobble everything they listen to. This essentially means that Last.fm records the tracks that users play on Spotify (or any other connected app), helping them keep track of their listening habits over time. This cross-platform integration embodies the service's intent to connect users' musical world.

The website interface boasts an array of features for music lovers. It offers a variety of music charts, live music events, and an upgrade to a pro version for a more tailored experience. Additionally, the platform hosts a rich community that users can explore and interact with. Users can keep themselves updated with the platform by signing up and logging in regularly.

One of the interesting aspects of Last.fm is its capability to visualize, in real-time, the listening habits and trends of its global community. This function could potentially help users discover new artists that are trending globally, thereby expanding their musical palate. This is supported by the Spiking Artists and Spiking Tracks features, which show the artists and songs currently making waves across the platform.

Another feature that contributes to the interactive aspect of Last.fm is the All Time Scrobbles function. This is essentially a live global counter showing the total number of tracks listened to by Last.fm users since 2003. This function is part of what makes Last.fm a global music community rather than just another music platform.

Lastly, the Around The World feature lets users see what's being listened to right now and where it's popular. This adds a level of global music discovery, further establishing Last.fm as a platform that fosters connection within its community.

Verdict: Last.fm stands as an innovative music platform, successfully integrating with other music services, offering unique features and fostering a global music community. For anyone keen on exploring new music and tracking personal listening habits, Last.fm provides a comprehensive and dynamic solution.