We use Flickr all the time for saving photos or checking out those of others, but we're just starting to take advantage of all the cool features the site has to offer. For instance, we just joined one of our first groups on the site, and it is chock-full of inspiration.
Corners of My Home is a Flickr group for people to upload the special places of their home that they'd like to share. We love all the beautiful little vignettes, like this simple living room that mixes modern and classic furniture. It's not super-fancy magazine layout stuff, just nice images that give a little inspiration for the home - which we can always use.