My flickr stream is one that is highly curated. I look for similarities or disparities that tie the images together. I treat my flickr stream as a 24/7/365 gallery.
Using Lightroom it is easy to duck and weave around and collate worthwhile images that can then be later drawn upon to upload. Tools like Lightroom and Aperture have made the process possible. Otherwise locating specific images in my unwieldy 200000+ image library would be nigh on impossible.