Website Thumbnail Image Generating Services

SimpleAPI is a free service to generate a screenshot image captured from any website you want. This service is started in this March.
<img src="">

Two months later, Hatena also released Hatena::Screenshot service for thier blog service's users. Registered users can post a blog which includes screenshots by writing the special wiki markup following:
[] ( size: midium )
[] ( size: large )
[] ( size: small )

Snapshot service is an yet another service which has no Japanese manuals ;)
You can specify height and width of the thumbnail image generated by this service.
<img src="">