Late to the party, reading through this thread a lot of people have touched on my own personal theories also.
Just MOO but I'm thinking there will be an extension tomorrow, I'm wondering if there's attempts at a deal to give up other involved persons. For me it seems like the current arrested suspect is merely a small part. I'd be more inclined to look at any links from him and his family, see if there's any ties. It just doesn't feel random to me. Even a tenuous link should be considered.
I completely agree with the Ian Huntley vibes also.
The discussion regarding the CCTV footage and whether the boy knew the contents of the bin, assuming it was sadly Lindsay < modsnip> I thought it would be worth mentioning that we are currently unaware of the events between her last sighting and this CCTV footage. A few people have mentioned smells, but there is nothing to say she hadn't been still alive the morning before.
I'm also interested in the really small area. Especially the police presence currently. It certainly seems to me there is a train of thought there that the small area is relevant and that she didn't go far. I especially think it's interesting she was last seen heading in a very similar direction to the boy in the CCTV footage which ties into the small area.
Just my own observations and opinions of course.