Yes. I suspect that the incidence of ADD on this forum is much higher than average. The diagnostic criteria are not that high.
As far as treatment -- stimulants help absolutely everyone focus better, regardless of whether or not they have ADD. I am not exception. My personal belief is that ADD is mostly just a catch-all term for people at the lower end of the spectrum of focusing.
My advice as far as medication is to get Ritalin or Focalin or Concerta, not one of the amphetamine based drugs. Don't bother with the non stimulant drugs. Amphetamine (Adderall, Vyvanse, Dexedrine) is a very serious, hard drug to be taking every day and it can do odd things to your ability to experience pleasure.
I am prescribed twice daily short acting Ritalin 20mg, though depending on how much I want to focus I take it less often and/or in a lower dosage. If your schedule is flexible and you know you don't want to be stimulated for 12 hours at a time, then ask your psychiatrist for a short acting medication rather than one of the extended release ones.
Finally, you should always get mental health advice from a mental health professional. Please see a psychiatrist, not your primary care physician.
You'd have to be stupid to get your N20 out of a Pam can though.
Here's a secret: nitrous oxide is legal to recreationally consume in most of the 50 states and can be purchased at porn stores. Seriously, they keep it under the counter in whipping cream canister form and they will also sell the "cracker" needed to safely pierce the canisters as well as heavy duty balloons.
Don't let the idiot who made this blog post turn your off. N20 is one of the safest medical drugs in existence. It's the anesthetic with the longest history of use and it is as safe as can be. The only danger is that you hold your breath too long, but that's not a big deal, just make sure you breathe some oxygen after a minute. Also, in high doses over a long period of time, N20 depletes your body's vitamin B which is very bad, but this is easily fixed by a multivitamin.