Most of the social providers have some form of rate limits on APIs.
|Social Provider||API Rate Limit Information|
”...app can make 200 calls per hour per user in aggregate…” See https://developers.facebook.com/docs/graph-api/advanced/rate-limiting for more details.
“Your application is limited to the number of API calls it can make by a usage courtesy quota. To view the courtesy limit and to request additional quota for your application, in the Google Developers Console, ...” choose “IAM & Admin” in the Google Console and select “Quotas”. See https://developers.google.com/+/web/api/rest/?hl=en_US#quota for more details.
“... make more than 500,000 daily calls to an API.. ” See Section 1.4.2 of Terms of Service https://developer.linkedin.com/legal/api-terms-of-use for more details.
A formula but generally 15 calls in 15 minutes per user token. See https://dev.twitter.com/rest/public/rate-limiting for more details.
“...So the limit value is not fixed, different applications have different restrictions, depending on the application of their own quality.” From http://open.weibo.com/wiki/%E6%8E%A5%E5%8F%A3%E8%AE%BF%E9%97%AE%E9%A2%91%E6%AC%A1%E6%9D%83%E9%99%90 using Google Translate, see for more details.
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|Yahoo!||No documentation found.|