Yes, I'm the 50 millionth person to blog about flickr. But it won't be my last. I'm upgrading to a Pro account today. The way I see it is Flickr integrates with Wordpress, if I change web hosts, I can still have all my photos; the list just goes on.
I blogged about using Flickr and real estate here. It's been my most read post; by hundreds. I think it really is a huge way to use Flickr. There are several things you can now do with YouTube as well when it comes to real estate. Check out my first attempt at integrating a Wordpress blog as my main real estate site and Flickr. It's pretty slick. I'm starting to blog over at realtyblogging.com. Not sure what that will lead to but we'll see.
Try this... Flickr Explore. They are doing some really great things like: