Mikes's dashboard

You sure can. Log into your account at my.xmarks.com and Go to the "My Account" section. In that page you'll find a link called "Change Bookmark Contribution" where you can turn off having Xmarks add your bookmarks into our database. Do note, however, that all the data we use gets stripped of identifying information, aggregated, and anonymized.

Boomers, those two sites don't seem very similar. If www.historymad.com itself redirects to the pinups site, then we'll be glad to process the redirection in our database.