For a totally different website I have a client whose representative only e-mails me USING ALL CAPS.  I cannot imagine what would possess someone to want to communicate like that.  Sure, I could just put up with it – but it is so so so difficult to read.  Last week I ended up responding to his e-mail with a polite phone call, answered his question, then asked for a small favor – to QUIT E-MAILING ME IN ALL CAPS.