yeah, it's hard to interpret exactly. It says
What Worker scripts and automation tools are permitted?
We are generally OK with you using scripts and automation tools to help you search and preview Human Intelligence Tasks ("HITs") more efficiently on the MTurk website, as long as those scripts and automation tools (1) do not serve as a substitute for your human judgment to complete work, (2) do not extract and store data from the MTurk website, and (3) do not disrupt or impair the operation of the website or the integrity of the marketplace (e.g., scripts and automation tools that call MTurk continuously and at high frequency aren't OK)
Which sort of sounds like Hitscraper of Hitfinder would be included as ok, unless they put too heavy a demand on the site. I wonder how that's determined. I mean, I know sometimes I get messages about too many page requests, then I know I have too much going on...but otherwise how would you know. Yeah. It's kind of concerning.