I have heard -- anecdotally, at least -- that while that TOS exists, CL practically enforces this if you're (a) straining the site and/or (b) using it for commercial purposes that seem to go against the spirit of CL. [Hence, neat things like Padmapper, the author of which is really like the nicest guy based on limited interactions.]
(Disclosures: I read this a few years ago for another project, and I also happen to know one of the developers of this site.)
I have heard -- anecdotally, at least -- that while that TOS exists, CL practically enforces this if you're (a) straining the site and/or (b) using it for commercial purposes that seem to go against the spirit of CL. [Hence, neat things like Padmapper, the author of which is really like the nicest guy based on limited interactions.]
(Disclosures: I read this a few years ago for another project, and I also happen to know one of the developers of this site.)