SSRN creates an Author Page from the information you supply on the Individual Info page under User Home. Select Personal Info on the Menu bar and follow the prompts. Once the profile is completed, it will be displayed whenever a user clicks on your name in SSRN. The Profile includes the number of papers you have in SSRN, downloads and citations.
SSRN's author rankings are available under the Rankings tab. Click on Rankings >Author Rankings SSRN Top Law Authors for a table of the top 3,000 Law authors. Rankings for 9 different measures are available, ranging from Total Downloads to the Author-Level Eigenfactor score.
Google Scholar Citations offers citation metrics for scholarship that appears in Google Scholar. An overview of the process of setting up a profile and gaining access to the citation counts that Google collects on your scholarship is here. The instructions for setting up your Google Scholar profile are available here and summarized below:
You can create graphs of citation counts for particular articles, and set up notifications about new citations to your work. Automatic updating is available; you can opt to be notified of new citations, and check them yourself before they display or you can add articles to your profile yourself. The method you choose for updating your profile has no effect on your Cited By counts and citation metrics - these are continually updated to reflect the current state of the web.