I am building a Product comparison web/application into my website. It will compare products by specs, price etc.
I am wondering if there any dangers of not making a user log in before using the web page. Ie crawlers going crazy and query the database lots of times? Otherwise, I would be letting any guest user add products to the comparison 'basket' and comparing them.
Edit: I don't want to block robots access to the page either, as I think this could be good for SEO purposes.
Is there any dangers of not making users log in to use it?