Lately, the comment spam rose exponentially. The is done by automated scripts, usually from compromised PC around the world. This way the original spammer will remain anonymous.
The last couple of days I noticed weird search queries (Google search referrers) in my logging;
Looks like someone (probably in the Hong Kong area) is searching the Internet for specific blogs (I guess SquareSpace blogs looking at the query) that contain certain words / fiels, indicating that commenting is allowed. These keywords match 100% with the field / words in and around the blog comment area. Shortly after these searches, the comment spam came pouring in.
At the moment, the only remedy against these spam comments is to screen every newly submitted comment by an editor, since the automated spam detection on the Squarespace platform is basically worthless. Too bad, since they rock at everything else.