I earned from Telcoin 1400$ for 10 retweets, and from TKY around 500$ for 20 retweet, you just have to chose your campaign carefully, is it good project or not, and to calculate how much stakes are gona get you how much money, not just is it easy task or not. I lost a lot of time on bounties that are only 10-50$ worth and spend 2 months on them. Chose carefuly and calculate prize.
PS: with social media, good thing is you can promote more than 1 ICO, and with signature....