I've written in this space many times before about the challenges of sorting and organizing your LEGO collection once it begins to expand. It's a necessary evil -- the brick equivalent of making sure you've hit the restroom and filled up on snacks before you set out on a long road trip. The less stops you have to make, the sooner you'll get there. Thankfully, I have not yet gotten to the point where I have to build with an empty Gatorade bottle below the desk, but who knows what the future may bring.
Over on The Brothers Brick -- there is a terrific essay on all of the competing factors when it comes to sorting LEGO bricks. It's a question of patience, time, and the reason you're sorting in the first place. I believe that most builders just want to get to a point where they can easily find parts, in order to interrupt their flow of building as little as possible.
Photo by ltwp.