Why Do Some People Write Like This? I Guess It’s Better Than All Caps. Is Their Brain Just Wired Differently?
Oooooh. It looks so official…
My theory on this approach as well as the ALL CAPS variety: it covers the fact that the writer has no idea what the rules for capitalization are.
If you saw it on this board (or some other V-Bulletin board), chances are it started out as an ALL CAPS posting. Because an all-caps posting (without any lower case letters at all) is automatically converted by the software to all-initial-caps.
Try it out in a test post in ATMB.
I Write Like This For Titles, Like Thread Titles. Why people would write that way all the time, I don’t know. but i find it less annoying than this but only marginally so.
What I find even more annoying is the Randomly capitalized word, as if the person In question thinks that by Capitalizing a word in the Middle of a sentence will indicate a Certain degree of Emphasis be placed Thereon.
People who’s native tongue is German will tend toward capitalizing all nouns (proper AND common) which is the rule for that language.
Yes, and then they get mad at you for pointing it out, as someone did on these boards. I forget the name, but they were hawking something, only they dind’t even realize it, and when I pointed out the annoying capitalization HABIT, he said he only did it because they WERE important.
Well, If They All Share One Brain, It Stands To Reason That They’d Act A Bit Screwy Sometimes.
WouLd yOU raTher sEe RaNdom cApitaLs in thE miDdle oF The wOrds, oR at tHe beGinIng?
?hat ?ight ?e ?un ?ould ?e ?ither ?o ?apitals ?t ?ll ?r ?ome ?laceholder ?ike ?his.
I do that, sometimes, when I’m channeling Milne.
I have a habit of “Germanizing” certain English words using capital letters - for instance, I always capitalize Gay and Lesbian when writing in a thread, just as I capitalize Black or Jewish or Asian…it is just my own personal tic and for me it shows a certain cultural respect, even though capitalizing Gay and Lesbian is not grammatically correct.
On the other hand, I never capitalize my own (real life) name when I write it; not in my passport, drivers license or anywhere - not since about 5th grade when I wrote a paper at school and didn’t capitalize the word god…my teacher said, “if you capitalize your own name, then you can capitalize God’s name.”
From that point on, both god and I have kept our names in small case.
However, in titles of threads, I think it looks better to capitalize every word, and is a journalistic style that seems more fitting in thread titles.
What Exit, front and centre! 
Me too. It’s a Very Fun Habit that seems to annoy some Others. Can’t really bring myself to care a whole lot - I have more important things to worry about. And I absolutely do it intentionally, as it changes (in my head, anyway) the pacing of a sentence. When one writes long and often grammatically complex sentences, one needs a Virtual Yield Sign to warn the reader of a slightly tongue in cheek sense of overimportance and verbosity.
It’s like air quotes for writing. (And no, quote quotes don’t serve quite the same function as air quotes. When I use quote quotes at “random”, it’s more ironic than a Proper Noun Generator.)
It’s pretty much writing with Truthiness. You can just hear the capitals when Stephen Colbert talks, can’t you? I can.
Maybe they’re golems? 
Amusingly, I just popped over to the SDMB after getting disgusted at another board in which people keep writing entire posts without any capital letters.
yes be thankful that we dont do that here some people dont even use punctuation
you geezers shud be hapy we hv speling and mostly ful wrds here nvrmind pnctuashun
now get off of MY lawn grampa 
I’ve been known to write like this, but I tend to stick to capitalising Nouns, Adjectives, and/or Verbs, rather than Random Words.