I would have to agree with BentMikey, in that they are a boon.
My view is:
You have 'normal people' or tourists riding or bimbling around in normal clothing, and wearing no helmets, it's great to see!
It can only help to turn the view of cycling, of an activity that rather than being for those in Lycra is a fun activity for all.
Not to say I have a problem with cyclists in Lycra, but for a majority of 'normal people' that is not what the image should be, instead the image should be of a fun and relaxed activity that is away from the normal rat race in London.
All that bimbling around also means that drivers should become more aware and take extra care around bikes, and if you have enough people doing it then it also forces the local authority, TFL and the Government to take notice and provide provision.
On a Sunday afternoon, I'd be in agreement with you guys. In rush hour on a Monday morning, no - but that's just my opinion obviously
