Want to know more about a person via their Twitter account? Trying to find out if it's a real account or not? Then it's worth taking a look at Foller.me which will give you some background on an account. Just type in the account name that you're interested in, and let the tool do the rest. It will provide you with some useful material, such as
Name, Date joined Twitter, Location, Timezone, Language, Bio and URL. You'll also get statistics on number of tweets, followers, following, followers ratio and how often they are listed in lists.
You can see the topics that they mainly talk about, the hashtags that they use, and the user profiles that the individual has interacted with.
Finally, you get a good tweet analysis by looking at 100 tweets to see which are replies, which have mentions or hashtags, retweets, tweets with links, twitter client usage, happy v sad tweets and the time(s) when the most recent tweets were made.
Between all of this information you should get a fairly good indication as the authenticity of the account.