I look at light and the way in interacts with everything around us. I pay special attention to strong contrasts between illuminated areas and the dark surrounding it. This leads to some experiments and different results but I am very - very - selective when it comes to uploading images.
Twitter users lean on the function[*] to act as a marker to themselves to read something later or just to bookmark a tweet for later reference. Or as a meta communication to another Twitter user — to silently say the equivalent of ‘thanks’ or ‘noted’ or ‘I saw that’ or ‘yes’ or ‘lol’.