We at Advanced Link Manager fully understand the issues related to automated querying. Our link popularity software was designed with them in mind, so that it generates less or equal load than a user manually doing all the searches. We do that by mimicking a user searching in a browser.
Advanced Link Manager does each query page by page, pausing between two consecutive pages. For each engine, it will only do a single query at a time. We avoid doing unnecessary searches, by promptly stopping when all the user's URLs were found (or when a set limit is reached).
Advanced Link Manager is written in such a way that its operation is indistinguishable from that of a browser. This was done for two reasons: results accuracy and respect for the search engine's resources.
Advanced Link Manager emulates a manual search through each search engine. It works exactly like you would, if you were manually checking your search engine popularity in each search engine.