Google Search Engine Meta Tag Limitations:
Google accept 69 Characters (Including Spaces) for title.
Google accept 156 Characters (Including Spaces) for Description.
Yahoo Search Engine Meta Tag Limitations:
Yahoo accepts up to 72 Characters (Including Spaces) for a title. (PDF’s accept up to 75 characters)
Yahoo accepts up to 161 Characters (Including Spaces) for Description.
Bing/MSN Search Engine Meta Tag Limitations:
Bing accepts 65 Characters (Including Spaces) for title.
Bing accepts up to 150 Characters (Including Spaces) for Description.
Bing...