On a serious note, I do think a lot of this material is a deliberate diversion. It serves the aim of diverting sceptical people down blind alleys and also discrediting them by associating scepticism about various issues with eccentric or 'loony' positions.
On the day of the bombings, at the same time and in the same stations, a drill was being carried out, for a terror attack scenario. The man who revealed this, did so on television. The official version of events, isn't interested whatsoever in this curious coincidence. In other words, no attempt has been made by the authorities to link the accused bombers with the drill, in any way or form. I'm not even sure whether the drill is mentioned.
There was also an incident at Canary Wharf, where there were shootings. Two to three people were supposed to have been shot. This has also been airbrushed out of the official version. An academic has since carried out a study in to the CW incident. After the alleged shootings at CW, the news reports changed from reporting incidents on the tube, to reporting terror attacks on the tube.