Same or Similar to Your Own Name
A good Twitter username is the same or very similar to your own name. This helps to establish branding online and build trust amongst your followers. If users have already claimed those names, try to add an adjective or descriptor such as @MarketerJen or @EntrepreneurJen. If you prefer for your followers not to know who you are, you can select a name that is a bit more generic. You can select a name, for instance, that is aligned with your domain name.
For example, I set up my Twitter account long before joining WA, but if I were to do it now, I might go with @LegitimateOpportunity because my WA site is http://legitimateonlineopportunity.com
You also can use a handle that you have established on other websites. For instance, you may want your username to match your e-mail address. If your e-mail address is CatLover1970@whatever.com, you may decide to use @CatLover1970 as your Twitter name.
My nickname locally in the bottled water biz is Water Dude so I'm TheWaterDude@TheWaterDude1 for a lack of something better....I might change it if I can think of something else.
You're right about the 15 characters though...I wanted it to be my website but it is way too long for Twitter.
BTW if anyone wants to follow me I'll have 1 follower!
Thanks Steph!