So, some time ago (month or two?) we introduced a CLA v2.0. This version of the document adds one important section:
10. Licensing of Derivative Work
If you provide your Contribution to us as intended for a repository or collection of work that is available under a free software license as defined by the Free Software Foundation (FSF), we guarantee that if we distribute a work based on or including your Contribution (a "Derivative Work"), in whole or in part, we will distribute that work under a free software license with terms that are no more restrictive than the licensing terms applicable to the collected Work at the time your Contribution is accepted. However, we may also distribute the Derivative Work under other terms as well. If your Contribution is intended for a repository or collection of Work that is available under differing licensing terms, this section shall not apply.
In layman's terms, this means that if you contribute code to dw-free, it always has to stay free. We cannot take that code and continue to use it if we stop distributing Dreamwidth under a FSF approved license. (Note that contributions to dw-nonfree do not benefit from the provisions of this section; but also note that we put almost nothing except site branding in dw-nonfree.)
I don't think we managed to call this out anywhere, so there you go. If you would like to sign this one and have us tear up your old CLA v1.0, please let us know. You'll have to sign and send in the last page of the new one to Denise, and then when she receives it she can file it and deal with the original one.