Your site is very user friendly and it might a good idea for you to make friends with the search engines too. Make sure all your forum messages get indexed by Google so more ESL professionals will find answers to their questions and take part in your discussions.
Eric, the key to getting Google to crawl and index your site is to remove the '?' and session ID's from the URL's of your posts and to create a Google sitemap of/for your forum.
Grammar Checker -
WhiteSmoke is an innovative writing solution, with a spelling and grammar checker to catch mistakes, and a style checker to enhance your writing.
Learn English Online(5)
A free English learning website with lessons, tests, music and much mo