Even the silliest ones, could potentially e a great idea.
There are literally a zillion ideas on what website to make.
Then there are others who are not quite fond of their names, and want to come up with something cooler.
Hence, they are on the lookout for ideas which sound more hip, and feel are more unique or personal and comfortable as compared to their actual names.
This is especially true for people looking for usernames for online dating sites as they want a slightly more marketable name. If not, you could add a number at the end of it, your birth date, or your favorite number or the year in which you are creating your email account.
You could also add your surname first and then your name.