I am a lot later with the post that I had wanted to be, but it still is well worth writing about as it is gaining some traction, of course 3pointd has already covered it. and has some interesting extra services to check out in this post
Babbage Linden has produced a Slateit or Hateit heads up display to enable you as an avatar in Second Life to just look at something and then rate it.
I particulalry like the way this is done as a HUD it detects objects in you camera field of view, works out where they are relative to you and then overlays a rating number for that object for your HUD.
So thats a proper targeting HUD. If you move it recalculates and then re-overlays.
By clicking on the number in your HUD over the object you are given a set of tags to choose from then you hit the slateit or hateit button in the dialogue and the rating for that object zips off to slateit.org and will then be reflected in your HUD and anyone else that is passing.
I used it last night to rate Gingers Timeframe over on IBM 1 (Babbage had told me off for practicing rating things on our private islands)
You can go and get a HUD from Babbages kitchen, then pop on over to IBM 1 and rate Gingers timeframe if you like.
As you know we here at eightbar are big fans of both clever things in Second Life, but also any interaction with the outside world and other services.