Subtext has got some emoticons and if you are using the FCK editor as your editor of choice, you can use these emoticons in your posts. But you have to post from the admin panel to use these.
If you are using Windows Live Writer; here is a plugin for you to utilise those emoticons from within WLW. It will be a direct img tag to the corresponding image inside your post. This can only work if you have the FCK editor installed on your site which comes with v1.9.

All you need to do is to enter your root Subtext installation so that the path can be constructed correctly. Your blog URL will be saved as soon you get out of the form so you don’t have to enter everytime.
I have a DasBlog version of it here as well. I didn’t forget the brothers…

Himmmm, shall I make a WordPress version too?
Actually it would be a better World, if there was a file name standard of these emoticons. All these 3 blog engines has got the same thing with different names.
Even Subtext has got it in two different places. (One in FCK editor the other in root\images\emotions). I should fix this rather than winging.
XFN Relations
There is a XFN relations plugin here. I made this one without searching the net to see if one is already exist. So here it is. I have taken the relationship names from our Subtext project as mentioned in the java script file. you can download it here.
I am glad that I have finally did something good for the community. 
