WizyLike is a WordPress plugin that allows registered users or visitors to like/unlike your blog posts. It allows the user/visitor to like your post one time only and unlike it of desired. WizyLike has 3 style options and 12 colour options for maximum customisation. The mark-up is dead easy to style so if ready made styles doesn’t suit you, go ahead and make your tailored style 
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Through the plugin’s settings page you can setup the colour, style, users-only limit, like text (eg ‘like?’) and finally the unlike text (eg ‘unlike’). You can also disable WizyLike on single posts (see screenshots).
Note: The live preview is open for visitors to like the ready made posts on there. You can switch the style and colours live on the post page. enjoy