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 

"Why You Need to Brag More...",

...and 3 Ways to Do It" is the title of a recent article by Peggy Drexler, Ph.D.

I know more than three ways, and entirely without the help of a Ph.D. -
After reading year after year the hymn of praise on my modesty in my school reports (believe it or not!) at the working place I woke up, decided not to be overlooked anymore and trained myself hard to change - with success.
(Nowadays I am trying to become mellow and modest again).
Will you think it is bragging when I show you of a link at The Londonist:

http://londonist.com/2014/09/surprising-photos-of-st-pauls-revealed.php

and then murmur under my breath: "I love the two photos I shot from St. Paul's this year, - may I add them?"

PS: The title of Drexler's article reminds me of the (still) hilarious first film I ever (!) saw in a cinema: "The Knack... And how to Get It" by Richard Lester, with Rita Tushingham. (I was a tall girl and thus could add a few years to my tender age - now I do the opposite :-)