Original: However, pages in user space still do belong to the community: Contributions must be co-licensed under the Creative Commons Attribution/Share-Alike License and GNU Free documentation license, just as articles are.
Simplified: Whether you include an explicit license statement or not, however, all of your edits on Wikipedia are also licensed under the GNU Free Documentation License. However, pages in user space still do belong to the community: Contributions must be licensed under the GFDL, just as articles are.