Of course they are. But some do and some don't.
Here is a list of Sports players official myspace pages: http://profilerehab.com/sports_star_myspaces There are some NFL players on the list.
MySpace codes can be used to change or enhance the look of a MySpace page. You can find HTML codes for MySpace pages online at websites such as Fillster.
You can find her myspace URL here at the Celebrity Directory of Official Myspace Pages: http://profilerehab.com/actors_official_myspaces
You can find his real myspace page on this List of Official Celebrity Myspace pages: http://profilerehab.com/musician_myspaces
You can find her real myspace page on this List of Official Celebrity Myspace pages: http://profilerehab.com/disney_nick_myspaces
You can find her real myspace page on this List of Official Celebrity Myspace pages: http://profilerehab.com/musician_myspaces
http://www.myspace.com/jonasbrothers Keep in mind, this a link to their MySpace artist page, not their personal pages. Links to their personal MySpace pages are not known, and if they were, it would be against WikiAnswers policy to give them away.
You can find her real myspace page on this List of Official Celebrity Myspace pages: http://profilerehab.com/disney_nick_myspaces
You can find her real myspace page on this List of Official Celebrity Myspace pages: http://profilerehab.com/musician_myspaces
Go to http://profilerehab.com/browse/myspace/simple_plain_layouts to see a bunch of plain layouts for myspace. There are instructions on the pages for how to put the layout into your profile.
His myspace page URL is listed here: http://profilerehab.com/actors_official_myspaces That list is a list of official myspace pages for celebrities.
http://profilerehab.com/disney_nick_myspaces Hilary Duff's official myspace is listed in the above link. It's a list of official myspace pages for celebrities.