It's extension plugin for nopCommerce. It's a multi-functional plug-in to send messages to the forum.
http://shop.dev-partner.biz/forum-post-editor
Features:
Sending messages;
Text Formatting;
Insert / Edit Html markup;
Insert a message with images, using tinyMCE plugin;
Insert video / flash content;
Supported Nopcommerce v3.4, v3.3, v3.2, v3.1, v3.0