INSTALL WITH CAUTION
I'm not a big fan of this extension, it can corrupt your database, it has bugs, it's hard on resources and the worst thing is you cannot disable or uninstall without DEEP Magento knowledge.
1) It has bugs, you cannot create new bundled products, or duplicate products. Editing complicated products may corrupt your database.
2) You will eat allocated resources, or not work at all on some shared servers -- it's a bit of a resource hog.
3) You cannot disable the plugin through Magento's admin backend. If you do run into problems, your stuck!
4) YOU CANNOT REMOVE THE EXTENSION USING MAGENTO CONNECT. The installer creates a bevy of SYSTEM attributes then automatically assigns them to all you attribute groups. The uninstaller leaves these so Magento Admin will blue screen every time you touch a product.
Note for those who have installed and are stuck, follow this procedure:
Remove the plugin using Magento Connect. After this is done you will not be able to manage products until you complete the next steps
Return to Magento Admin, flush all caches.
After uninstall, go to MYPHPADMIN, locate the eav_attribute table, find the relic attributes beginning with "gs_". Edit each entry in the table by setting the the "is_user_defined" field to 1.
Go back to Magento Admin and delete the attributes beginning with 'gs_' through Magento admin.
I don't mean to sound harsh, thic could be a good extension however the developers need to pay attention to the basics, and finish up the uninstall.
November 29, 2013
Worked as expected, easy to install recommended if you have large amount of products.
October 1, 2013