INSTAGRAM (they depend on multiple factors like age, niche, authority, etc - so not 100% precise) from http://mpsocial.com/t/instagram-settings-to-keep-your-account-safe/101 and https://help.instagram.com/161863397286564 Maximum following: 7.500 in total Likes: 350/hour Comments: 100/hour Hashtags: 30/post Mentions: 5/comment Suggested settings For NEW Accounts Follow / Unfollow: 300-600/day Likes: 400-600/day Comments: 100-150/day Suggested settings For OLD Accounts (if you want to SPAM) Follow / Unfollow: 800-1.000/day Likes: 800-1000/day Comments: 200-300/day TWITTER from https://support.twitter.com/articles/15364 DM: 1.000/day Tweets: 2.400/day (or 240/hour) Changes to account email: 4/hour Follow: 1.000/day (maximum limit, can be lower based on your account activity) Maximum following: 5.000 in total (at the beginning, it will change based on your account activity) TUMBLR From https://unwrapping.tumblr.com/tagged/tumblr-limits Follow: 200/day Maximum following: 5.000 in total Likes: 1.000/day Private messages: 50/day New secondary blogs: 10/day Username change: 1/day New posts: 250/day (sum of primary and secondary blogs) New photo posts: 150/day New question posts: 2/day New videos: 100 MB/day (upload limit) New posts in queue: 50/day Maximum posts in queue: 300 in total Tags per post: 20 (you can use 30, but only the first 20 will work) PINTEREST from https://help.pinterest.com/en/articles/limits-pins-boards-likes-and-following and http://socialmarketingwriting.com/cheat-sheet-pinterest-limits-infographic/ Maximum boards: 500 in total Maximum pins: 200.000 in total Maximum likes: 100.000 in total Maximum follow: 50.000 in total Follow: 300/day Comments: 3-6/day LINKEDIN Not yet researched. Reply to the post if you already know the limits, please provide sources. FACEBOOK Not yet researched. Reply to the post if you already know the limits, please provide sources. ---- I will edit the post on an ongoing basis if I need to change or add new numbers.