As I read various comments or blog posts online I see a number of conservatives who refer to our current president as "Barry." This is used in the same vein as many liberals used "Dubya" or any of their other derogatory names for the previous president (many of which are not going to be posted here). I do not support such informal and derogatory nicknames for the President Obama and I did not support such terms for President Bush. What Pres. Obama gets called is far milder than what Pres. Bush was (and is) called.
Regardless of what you think of a particular president, the office deserves respect. Even if you do not respect the individual, you should respect the office. Pres. Obama should be referred to as Mr. President (when talking to him, should you ever have that honor) or President Obama (or Pres. Barack Obama); he can also be referred to as "The President". On Twitter I can understand referring to Pres. Obama as BHO (which, while sometimes used to point out his middle name - Hussein - to try to link him with a certain former Iraqi dictator, is preferable to BO). However, that particular abbreviation should only be used on Twitter (or some similarly character-restricted medium) if your tweet is longer than the character limit and that is the best way to reduce the number of characters.
I know many people will disagree with me but I believe that people in important positions deserve respect and should be addressed respectfully regardless of your personal opinion of them. Besides, I find it difficult to take someone seriously when they refer to our president as "Barry." Here is an example of what I am talking about from a comment on a news story on a major news site. [Not that comments to online news stories are a good representation of the public, at least I certainly hope they are not representative, but they can serve as an illustration of my point].
"[A person] will run against the Barrack Hussein WH -- they will sign of the school system to the teacher unions for the future obligation of their pension and health benefits -- what that BHO care .. his kids are in a private school!"
That quote is taken completely out of context so it does not make a lot of sense (it does not make a lot of sense in context either). First, the commenter referred to Pres. Obama as "Barrack [sic] Hussein," which is an obvious appeal to anti-Muslim sentiment (or, at least the logical fallacy of guilt by association [in this case with Saddam Hussein]). Secondly, the commenter referred to Pres. Obama as "BHO", which is not necessarily disrespectful but neither is it respectful. I know people will quibble with my point but I believe that the office of President of the United States of America is deserving of more respect, regardless of your feeling about a particular president.
We can criticize and make a caricaturization of a president but the office of president should still be respected. Much of this boils down to basic civility, a quality I fear too many in our country lack. A person only weakens an argument by reverting to name-calling or otherwise disrespectful attitudes towards others.