Hello, We are working on a complete site redesign.  One of the mock-ups that are being reviewed is of a page that encompasses and entire category of products, but the only way the user can see the products is to fill out several drop down menus, and then a subset of products that match that criteria will appear. Once that list appears, the user will then be able to click on each of the products and will then be taken to the product page. I'm concerned that this layout will pose a crawlability issue since click activity and drop down menus have always been a problem for bots in the past, has anything changed?  Will the bot be able to follow the links to these product pages if it can't see them since it can't fill out the form? Also, depending on the functionality of this 'form', I'm assuming the product listing will be populated dynamically and pulled from another source, which means that the product links will not live in the html of the page, and hence cannot be crawled.  Does anyone know how this is normally handled?  Do the actual results usually live elsewhere or does it live in the html of that page? Any thoughts or clarity around this would be appreciated.