Does anybody use any of the music social networking services out there like iLike, last.fm, and the such?  If so what features about them do you like?

I'm subscribed to last.fm but am not particularly fond of the way the plugin tracks your favorites - basically by what tracks you've played most frequently most recently, which is not necessarily indicative of one's favorites.

What I'd really like is a service that lets you sync designated playlists to it automatically, or better yet song ratings.  Anybody know of a service that does that?

i only use AllMusicGuide.com for reviews and the Star Ratings.
i also submitted Yamaoka's basic info to them and got it posted (though they didn't put the discography info for some reason).

I've used last.fm for a while now (it was previously Audioscrobbler), and I like it even though they keep adding useless shit to the site that makes it really slow.

http://www.last.fm/user/bamatone/

If you use the player (which I don't - I use the old Winamp plugin), you can listen to various radio streams, kind of like Pandora.

last.fm is hands down the best and pretty much only extensive audio "social" network.

It only logs the stuff you listen to because that's pretty much the only way to do it.

Your main charts are just play counts, but beyond that, you have user-submitted "tags" you can filter by (on the player and the site, I believe), which are just tags that users classify their own music, generally they fit the genre of the band or artist but sometimes its' things like "seen live", "good in concert", "psychadelicpostrockfunkno", etc.

It also does a very good job of artist linking, that is, "listen if you like ...".  Click on any of your top artists and click on that artists similiar tab and chances are you'll find a lot of commonalities between artists and if you take the time to listen to them you'll probably enjoy a good 50% of them.

There are also plugin sites that work outside audioscrobbler that basically wget your stats over periods of time and analyze it, one in particular I recently did is called LastGraph, which graphs your artists and listens over a period of time.  It's great at showing trends (when you did, didn't listen to music, what artists were highest playcounts at what times, etc).  It was neat:  http://lastgraph.aeracode.org/user/sephvbc/ (I think my chart is very large, and takes a lot of resources to load and scroll through it in Acrobat).  There are also user written plugins that compare your taste in music to another users and plugins that tell you how "Unique" your taste in music is, i.e., how much variety in genre and sound you listen to.

I was a little annoyed that last.fm sold to a big company (Was it CBS? Or AOL or something?) but so far they haven't really "ruined" the site.  It's also been slow and it's ALWAYS had periods of downtime and/or broken submissions, but you have to expect this from a database that does all this kind of data manipulation with hundreds of thousands of users.

If you're worried about the chart statistics, you can actually clear your play counts every so often, and you can choose to have your front user page show only a certain period of time (all, rolling 1 year, rolling 6 month, etc).

Here's mine, if you're interested in what it looks like when you have a decent amount of data scrobbled.  I stopped listening to music on my computer a lot over the last 6 or so months because I play WoW and like to pay attention during raids and not get distracted.  One of the key selling points of me buying an iPod was so that I could scrobble the music I listened to in my car and on the road, which is probably 90% of my music listening habits of late.

http://www.last.fm/user/sephvbc