Blitz and Bullet Chess

There are several possible factors that can individually or in combination give the appearance of strange clock behavior, especially if you are not familiar with them:

• bonus time ... a feature in Live Chess which adds seconds to a player's clock after making a move,
• lag compensation algorithm in the server which attempts to correct each player's clock for time lost in the transmission of moves, and
• premove ... a feature in Live Chess which allows players to make moves on their opponents' clock.

hi. This occured to me too. Several times.

The first question is: Can I make moves while the opponent is thinking?

The second question is: What exactly are the differences between blitz, bullet, standard?

The third question is: How can I challenge someone to a blitz game? Arrange an appointment for certain date and time?

Thanks in advance...

Dimitris