What is your Tumblr? Mine is iamsherlocked2012 ! I'll follow you...

With regard to Homeless Network...I just don't see how he could have done it without extra help, not just Molly or Mycroft. Immediately after the fall there's a bunch of people gathered round him most of them doing a bad job at pretending to be paramedics (ie. just throwing him onto the stretcher any old way instead of giving him a neck brace or something)...but doing a good job at stopping John from getting suspicious that Sherlock might be alive - there's the person who removes John's hand from Sherlock's pulse for example. And not forgetting the guy who knocked John over with his bike. Also, I don't believe that Sherlock would manage to fall into the dumpster truck without having to take a running jump from the roof which only leaves the explanation that he must have fell into some kind of landing net which would obviously have to be held/operated by someone. And someone who could then scrunch it up and throw it into the truck before it drove off thereby removing the evidence from the scene.

Basically there a just too many factors that involve other people. It might not neccessarily be the Homeless Network...it could be people arranged by Mycroft I suppose...but seeing as it's already been set up that he has these contacts and that he's used them before...it seems quite likely that it could be them. They would all have to be paid to take part of course!

It's not a TV show it's real! Lol, joke. Sometimes I do forget though. 

LOL. So Mycroft.

I actually think that Sherlock's quip about the Homeless Network being more relaxed about taking bribes is actually meant to suggest that some of the police ARE actually relaxed about taking bribes, or that some are bribable.