In the sense of using the same log in profile to edit wiki articles. As well as upvotes being used to encourage quality work being put into editing the wiki.

Edit:

Given unlimited development resources we'd want to integrate the two userbases, have a karma requirement to edit the Wiki, and such things, but we don't have much development resources (whines for Python volunteers again). But I would still like to see a list of recent edits and/or active pages in the Less Wrong blog sidebar, and a list of recent blog posts and recent comments in the Wiki sidebar. Of course the first priority is getting the Wiki set up on Less Wrong at all, rather than the current foreign host - I'm told this is in In Progress.

It seems this was envisioned in the beginning.