A simple plugin that will upload your image to www.imageshack.us (a free image hosting service) and insert it in your post.
Supports custom sizes/

Allows you to insert an image from the clipboard and give it a filename other than Image1, Image2, etc.

The project uses my C# SmugMugModel framework (http://smugmugc3.codeplex.com) to let the user log in to his/her account, view albums, select pictures from them and insert them into Live Writer at a desired size, with embedded link or not.

Edit pictures inserted in the windows live writer editor more easily, integrates with many image editors, streamlined workflow for editing pictures as you need, now updated to optionally show before you publish your blog post.

Uploads an image to your Flickr account and inserts an inline picture into your post.

insert kinds of wonderful and pop emotions into your blog easily;
insert more than one emotion once a time, and etc. just enjoy it

Now you can insert customized bullets to emphasize your points. Not only you get rid of those boring black bullets, but you also get the flexibility to use either a set of 42 bullets or add more if you like!!

Suggests images, links and related articles while you write

Uses SnagIt screen capture tool from Techsmith to provide sophisticated screen captures directly into Live Writer. Utility allows for many of SnagIt's capture options, use of the preview image editor, and directly embeds images into the current post.

This plugin allows you to add a gallery of thumbnail images in your blog.
Each thumbnail image will link to the image in the SmugMug gallery.

FacebookPhotos allows Windows Live Writer users to add photos uploaded into Facebook directly into their blog posts. It uses Facebook.NET library to enable communication between Windows Live Writer and Facebook.

Add cool Polaroid-style pictures to your blog. This plugin allows you to tilt your polaroid in either direction and even add a text-caption to the photo.

Allows you to do an image search using Windows Live Search and choose the image you want to put in your blog entry.

New version (v1.3 - 12th of Jan. 08) released! .Net 2.0, text wrapping and margin support

Lets you select a photo from someone's Live Spaces Album

Insert smileys from Yahoo, Yahoo Hidden, MSN and Custom smileys. You can add as many smileys as you like in the custom smileys section now.

http://blogs.msdn.com/rahulso/pages/windows-live-writer-plugin-insert-yahoo-and-msn-smileys-emoticons.aspx

This plugin integrates Windows Snipping Tool (Windows Vista and Windows XP Tablet only) into Windows Live Writer and able to insert screenshots directly into edited post

Uses SnagIt screen capture tool from Techsmith to provide sophisticated screen captures directly into Live Writer. Utility allows for many of SnagIt's capture options, use of the preview image editor, and directly embeds images into the current post.

Inserts an image of a website into the Live Writer window.

Screen captures a URL for inclusion in your blog.