WebThumb.bluga.net - Capture Screenshots and Thumbnails

If you’ve ever found yourself wanting an easy, web-based tool for taking website snapshots or creating thumbnails, look no further than WebThumb.bluga.net next time the need arises. This web service API generates web thumbnails and full-size screenshots with a fairly quick turnover time of around 40 seconds. Once you enter the URL of the site you would like to turn into a thumbnail, WebThumb.bluga.net will return it to you in four default sizes, as well as a full-sized snapshot. Both .png and .jpeg output formats are available, and the site also supports Flash and PDF. As a registered user, you receive 100 free credits per month to spend on the site. In general, thumbnails cost one credit a piece, although some extra features cost more. Additional credits can be purchased for reasonable rates, with prices decreasing the more you buy (for instance, $100 for 57,000 credits, or $20 for 6,500 credits). Purchased credits never expire.

"Bluga.net WebThumb provides a web service API for generating web thumbnails and full size snapshots of websites... WebThumb offers more features (including Flash 9 support) and quicker response times then any other service. You can snapshot any page and get a thumbnail back in around 40 seconds."

This site is easy to use and provides a useful, web-based service. Casual users needing screenshots and thumbnails for personal use probably wouldn’t need more than the free 100 credits per month, and anyone using WebThumb for professional purposes will find the rates to be very reasonable.

For anyone using this service for professional purposes (like if anyone actually purchases 57,000 credits in bulk), will the turnover of around 40 seconds really be efficient enough? Is there any way you can take a snapshot or thumbnail of only part of a web page or only of the full screen?