Bing 

Bing now supports batch mode for submitting URLs to Bing

You can now use a single Bing API request to submit up to 500 URLs, instead of making 500 individual API requests. Bing announced it has added support to submit URLs to the search engine in batch mode. That means instead of making an API request for each URL you submit to Bing, you can batch multiple URLs into a single API request. Bing said it supports up to 500 URLs per batch submission. How it works. Bing said, this is “very similar to the individual URL Submission API (Blogpost) and hence integrating…

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