You are correct, pegged was most definitely the wrong term here. What I meant to say is that they may be traded against BTC much like forex. And so yesterday's Bitcoin rally killed altcoins profits against it. But yes, altcoins have seen a general rally much like Bitcoin.
Not directly but there are swaps on BTC that pay out interest a la FX. You could also lend your BTC for margin financing. However you have to hold BTC for that and well.......
I was right again, BTC dropping 900 bucks in 2 days, now it is around 2000... Low was 1870ish... When it is all over a 50% retrace and consolidation is very likely...
No biggie. Had a bigger drop percentage wise back in March. And early Jan. And June/July last year. And probably a few others I didn't look further back at.