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Search engines are more likely to punish the crawler by cutting off their IP, either temporarily or permanently. Yahoo Site Explorer is very good at this. (Seriously Yahoo, stop it!) Nothing like coming into the office in the morning, looking at your overnight scraping results and seeing a bunch of zeros.
First, rankings are by keyword and not domain, and therefore so is scraping. Second, SEO pros tend to grab rankings for competitors as much as they do their own charges. By handing-out penalties Search Engines would risk discharging corporal punishment upon the innocent.
1. Does the third party server sometimes get slow in response, making your page have trouble loading? If so, this could make people use the Back Button more and return to Google's search results page. Higher "bounce rates" may negatively afftect your rankings.
2. Does the thrid party tracker require a text link to provide their service? If so, is their website really a "good neighborhood" or does giving them a backlink mean you are linking into trouble?