will 2000 year .dot com collapse will be back?

Sorry, but I highly doubt this. Technology is too advanced and IT is too powerful now of days.

I think that people are more cautious these days when investing. But their confidence seems to growing as the stock market improves so there is a chance that this could happen again but I think it is very unlikley to happen in the next few decades.

I recently read an article that said that today's "bubble" is more calculated, they don't let anyone take investments on any high-tech company that starts to fool around with the "big guys".
I think it won't collapse because, as they say: the bubble isn't big enough.