Calls on Reddit, Facebook, and Twitter message boards over the weekend to buy silver and squeeze short-sellers helped send spot silver up 6.7 per cent on Monday, another landmark day of social media-driven trading dislocating asset prices and threatening more havoc on Wall Street.

The Reddit phenomenon swept Australian silver miners higher and the commodity price to $US28.85 an ounce. Manuka Resources was up 31 per cent, Adriatic Metals 19 per cent, and Silver Mines Limited 49 per cent.