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Why do you think that this will "hurt" you? I mean you provide a very useful tool for other webmasters and their visitors. The only thing you have to keep in mind is that you might need a lot of ressources to keep the system running. If your tool is embedded and needs to work with the original source, you need a powerful server to handle all those requests... nothing is more annoying than a helpful tool which doesn`t work

Hi, Whether you report this or not is up to you - there's always been a lot of debate in SEO circles about whether it's a good idea to do this or not but the end of the story is pretty much that it's up to you. The technical answer to the question is that yes, soliciting links with products is directly frowned upon. Plenty of people still basically do this but in a more subtle manner, where they are "developing a relationship" first, often not directly asking for a link. Products for publicity is an ancient trick which Google won't get rid of, but they definitely can and do say that they aren't happy with a direct exchange.