The Daily Mail: used a blue theme throughout the article which is clever yes and will draw in the attention of people who are familiar with Twitters branding and theme. To my eyes as a designer I find it a bit cheesy, but I can see how this would make the article more interesting to an unassuming reader. To me this decreases the formality to a certain degree, probably the most informal of the three. Uses the same image as the the Daily Mirror so this deceases its edge over the other publishers. The Times is the only one to use an image that is well balanced and well framed in my opinion.
The Times:very formal in tone of voice, lots of writing that's in depth and gives plently of perspective to the story. I find this article a lot more opinionated and comprehensive. Not trashy like a tabloid. this is the reputation that the times has anyway. Stricter use of columns gives the article a much more formal tone of voice compared to the cluttered layouts of the other two newspapers. Overall serif feel makes it feel more formal (social context) longer sentences and less use of colloquial terms. All type used is very thin in weight, this decreases the informal tone.
The Daily Mirror: probably the least formal of the three newspapers I looked at. The headline is in a sans serif. It's bold and quite informal. They have used a column grid to layout the article, but there is much less content compared to The Times. This article is my favourite, its concise and to the point. Its use of screen shots from Twitter as well as Twitters logo decrease the formality but the information is communicated effectively, I found it the easiest to relate to. The journalist who wrote the article, Victoria Murphy also wrote an online version of this story. Online the rules are completely different. The sentences are shorter and the information is communicated across much more concisely. The opening lines of the online article read: