I use custom contact form plugin on my contact us page. Reviews are not on that page. When someone fills in the contact form, the custom contact form plugin will (obviously) send an email. When this email is being sent, the following error appears on the page (and the email is not sent):
Warning: Invalid argument supplied for foreach() in /home/sider/public_html/wp-content/plugins/wp-customer-reviews/wp-customer-reviews.php on line 164
Otherwise no real issues. Awesome job. Removing the date, aggregated review totals, and a recent review widget will make this plugin unstoppable.