One Riddle Solved! (Spit Chewing gum can look lovely!)

Dear You, 
you know by now that I have an eye for little things - and being (part-)eidetic, I do not forget pictures (nor faces, even when they have aged during years-long absence).   
So when I spent a few weeks in London in August 2014, I walked over the Millenium Bridge,  and run with the hustling stream of visitors. Then I stopped, several times, seeing tiny drawings at my feet (or under the feet of others - people just don't look), very colourful and a bit naive, like little graffiti. Of course I took photographs (not that easy - I could not get sharper ones), and when I tried to find out what they are, no one could tell me (might have asked the wrong people in Tate Modern?) 
Now I think the riddle is solved: I looked into facebook today and saw a photo in The Londonist and thought: that must be him - the creator of these tiny images! 
Artist Ben Wilson draws his miniatures on chewing gum that other people carelessly spit out on the pavement - and in a BBC interview (at the end of my letter) I found this sentence most impressing: "Not making to many judgments - just seeing what we can make out of it". (OWTTE)

http://cdn.londonist.com/wp-content/uploads/2015/01/Chewing-gum.jpg

Here is the link to the BBC film: 
http://www.bbc.co.uk/news/entertainment-arts-11677462

So I am content that I stayed on facebook (though I drastically reduced the time I spend there to 10 minutes a day). 
And happy to have one answer (of many) solved. 

Yours 
Britta 

Feverish Swan Walk, SW 3

The last two days I slept and slept, due to my feverish swan-throat, and in my dreams I walked about the Albert Bridge a hundred times (now you know where I lost the 1000 grams of precious Me :-)
When you walk on after leaving the bridge you come to Swan Walk - and that gave me the idea to pin your attention to Sue's exquisite blog http://prufrocksdilemma.wordpress.com/2013/07/21/invective-against-swanns/ - you'll see (and hear) what I mean.
Though: 'Invective against swans' I am not:

and I would spread my wings to fly as quick as I can to this house, would they offer it to me...