1. Keep your meta description simple and short — one line.
2. Write to the visitor.. NOT for the search engine.
3. Do Not stuff your description with all the keywords.
4. Make sure your description tag actually IS what you have on the page — relevancy is the key.
5. Write relevant description tag for every page.
6. Do NOT go beyond 200 characters for the description — it may be truncated.
7. Completely avoid any special characters in your description.
8. Don’t SHOUT! Avoid using all CAPS in your description.
9. Do not try to outsmart search engines — they are smarter anyway.
10. Use this piece of text to your advantage — write compelling copy that makes surfers visit your web page.