jemjabella was nickname given to me about 10 years ago, and the tagline is intended as humour.
I use it as a measure of whether or not people should read my site... i.e. if you find it funny, or are able to ignore the blatant egotism, then you would probably be OK reading my site. If it winds you up or gets to you, then you won't like the content and you should read at your own risk. :)
Is there a fun story behind your website's headline: "Jem Jabella - Ultimately Better Than You" ?