I like the idea, but the timeline feels a bit weird. Mostly, I wonder why the photos don't change size like the tweets. As the are the ones determining the organization of the timeline (tweets are much too short), I see almost no difference between, say, 4 and 11. It could be better.
Edit: Just realized the effect is better when you skim fast through the timeline.
Are there two different sizes used for 11? I have two 11s next to each other, one with font-size 10.135196568048482px, and the other 6.871829374810328px.
Edit: Just realized the effect is better when you skim fast through the timeline.