auto like bot

Anyone knows a bot that we can use for auto like and repost posts from a specific profile on Facebook, Twitter and LinkedIn? It can also have an ability to add a comment before repost/retweet.

This is a bot that I was working on for some time, showcasing. Brief: Liking and favoriting other peoples' works is a great way to get noticed on 500px since people will feel grateful and want to give back to you. Testing it for five minutes of continuous use got me around 5 likes and favorites...