Blog Tip #18: Keep your user name under 15 characters for sure

If you plan to create a user name and "brand" it across the internet, eg have the same username for your email address, Web 2.0 content, blog, web directories, social bookmarking sites and such, you will discover (the hard way perhaps) that some of them won't let you create user names that are longer than 15 characters. Also some of those services do not like user names that start with a number. They insist that the user name must start with a letter.

So if you are planning to have an across-the-board internet brand, be sure to stay under 15 characters - if you want to use exactly the same user name everywhere!