I don't know if my issue is unique, but we run a development server with a copy of a clients blog on it. I'm able to authenticate and add two different twitter accounts and bring in the tweets without any issue. When they log in and try to add their own to the dev site, it doesn't work. I can't add it for them, since they won't give me the password. We had a online meeting and they tried while I was watching. Still not able to download their tweets. Any idea why I can on two separate accounts, but they can't? They're doing the exact same thing I am, but with different results.