Maybe lol but yeah Ive been looking for years on the download section often checking several times a day(when im not doing other things) and i kind of get disappointing when there is nothing new for weeks at a time. But more on the intelligent side: It will get Toady a chance to talk to members more easily and far quicker then the forums as well as post information quicker. Ive been seeing alot of indie games use tumblr and twitter with massively good results and great feedback from users, and no im not an idiot who just wants him on twitter to say "oh hai toady wht r u doin?" and ask stupid questions. Its a better way to post quick info on what feature/bug hes working on. You know of Notch? creator of minecraft, which is inspired by DF. He uses twitter almost every day, though he sometimes gets maybe too personal? He posts useful info for users, like hes almost done the next update, or that it will be very buggy etc. He is much better off with twitter and users give him quick ideas and thoughts on what they think can improve it, he also does it to keep in quick contact with his team when hes at home or something. He is one of many examples i know of.
[edit:] im not saying it should be regularly updated, just every now and then(every couple days or something, it only takes a minute). Yeah but i know alot of people dont like twitter...or Facebook for that matter(neither do i...)