Anyone using @Lightroom to manage photo libraries?

Is anyone using Lightroom to manage a photo library? I’ve been using Picasa but I am considering switching my habit to Lightroom to manage my libraries (I already using Lightroom for all my photo editing).

I need to be able to manage photos on multiple drives which preferably update dynamically (I know I can also do an import to refresh the folders). I’d also like to upload easily to Picasa (I use Picasa for online photo storage), Flickr and Facebook. I know about some plugins that do that but any recommendations would be great.

I’m pretty sure this is possible but I’m interested in your experiences if you are using Lightroom like this.