makong

This SEO plugin for WordPress allows you to create fully customizable:
<ul>
<li>
SEO Title
</li>
<li>
SEO Decription
</li>
<li>
SEO Keywords
</li>
</ul>
To create any of SEO meta you will need to add a template to different types of content, as Post/Categories/Taxonomies/Custom Post Types/etc.
So, if you have a few thousands of pages on your wordpress of one kind, let’s say recipes, you can create template for all recipes with just one sentences.
For example: 
Using title template like this: “%TITLE% recipe – How to make %TITLE% easy!” , will get your page titles with recipes look like this: “Potato salad recipe – How to make potato salad easy!” .
As you can see with just a small title template, you can get a greatly SEO optimized titles for thousands of your pages with recipes (or whatever product you have).
GOOD NEWS for those who are struggling with How to do Multilingual SEO for WordPress Sites (using WPML).
This small plug-in is fully compatible with WPML plugin for Multilingual Websites, which is really helpfull as you can create all SEO meta templates for each language in one place.
We’d really appreciate your comments and reviews for TiDeKey SEO WordPress Plugin!
So… 
Use! Enjoy! Review!

Tidekey

TiDeKey - Title + Description + Keywords are the first things you do for OnPage SEO, so why don't you customize your SEO meta template easy?

hitmax1978

Find the post. Click “Edit post”. Activate the “Text” tab of your post.
To modify the title tag of your post, add a simple string into your post content: 
<!—title=”your title”—> (See screenshot-1)
To modify the description tag of your post, add: 
<!—description=”your description”—> (See screenshot-1)
IMPORTANT!!! Be sure after “<!” characters you have two “-” characters. It is similar to HTML comment tag.
Multilingual support
If some kind of multilingual plugins are active (for example Multilanguage by BestWebSoft) – you can define titles and descriptions in other way: (See screenshot-2)
English locale (United States) 
<!—title_en_US=”your title”—> 
<!—description_en_US=”your description”—>
Українська локаль 
<!—title_uk=”Ваш заголовок”—> 
<!—description_uk=”Ваш опис”—>
Русская локаль 
<!—title_ru_RU=»Ваш заголовок»—> 
<!—description_ru_RU=»Ваше описание»—>
Feedbacks are welcome. Visit <a href="http://onlineservicetools.com/meta-tags-from-content-wp-plugin-discussion-feedbacks" rel="nofollow ugc">onlineservicetools.com</a>

MetaTagsFromContent

Good in multilingual site

Generates title and description tags from post's content.

Tidekey vs MetaTagsFromContent