Spam and the Village Hall
It seems that the Wordpress forms are using a "plug-in" called Jetpack - also by the same authors as Wordpress.com and Akismet
I have to admit that WP and Akismet, possibly because of Jetpack, do a pretty good job of blocking spam emails. This is at the same time as the fact that WP sites are a huge target for spammers. In fact I was a little concerned that opening up my sites with forms would expose my input to abuse. However, with this design template I can make my custom pages look sufficiently similar to the Wordpress theme that most users would not know the difference.
In fact I would hazard a guess that many would not know that anything had changed from Colin's design.
Update: I changed the Subject in the Jetpack contact form on 8 March and no spam as yet on the 9th.
Google and other search engines will see this type of spam as "unhelpful" for the user experience of a website.
An Example - taken from the Feedback on the Village Hall website
I am not sure if the spam feedback is included in the feedback-export file that you can generate from the Wordpress User Interface.
The effect of User Generated Content on SEO
Much of the comment submitted to interactive portals is in the form of spam. The User Generated Content can be veiwed less than favourable by search engines and penalties are applied if not controlled.