Elon Musk, the tech billionaire who can influence Dogecoin’s price with his tweets, warned his Twitter followers against overinvesting in crypto—a day before he’s expected to air a skit about the coin on Saturday Night Live. “Cryptocurrency is promising, but please invest with caution!” Musk tweeted. Dogecoin rose from $0.57 to $0.59 immediately after the tweet. It now trades for $0.62. Attached to Musk’s tweet is a video interview that online media outlet TMZ published in February. In the video, Musk told a gaggle of eager reporters and fans, “People should not invest their life savings in cryptocurrency. That’s ... (full story)