Pepper and Linker Split,
The duties of dealers depends on the game being played. The board should never be announced in flop games, or button games. However, if asked the identity of a board card, the dealer should announce it. There are times when board cards are a little difficult to see because of lighting for example. In cases where players have poor eyesight the board should be called out by the dealer, if requestd. This is in compliance with TDA Rule #6 Special needs. There is a right way and a wrong way to read the board. The right way (only if requested) is to call out the individual card or cards in question. "Ace, seven, nine, three, eight." The wrong way would be "okay guys there's a four flush on board you only need one club for a flush."
Seven card stud requires that dealers announce all new pairs on board. Low limit stud even requires that possible straights and flushes be announced on sixth street. The "possibles" must be 4 to a straight or flush. Tournament's may specify different rules but these are proper procedures for stud. Big bet poker may not allow dealers to announce any "possibles" because players that play the higher stakes are so sharp (

) that they feel insulted if you tell them that Sally has four parts to a straight flush. They will usually give you some smart-ass answer like; "I can see that, why don't you give her a little more help, you moron." Actually, the reason is; Higher stakes players are (believed to be) more competent and are always aware of the opponents up-cards.
Linker_Split, I have to disagree with you when you call poker a sport...a competition, yes. I would hate to consider some of our beloved bracelet winners athletes!
I hope I didn't disapoint DCJ001 with my answers.