Since we are on the subject of draws...The best story i ever heard was about a guy that was losing. Every so often he would quietly blurt out "Dr.." After about 6 times of doing this, his opponent said "Draw?" The guy quickly accecpted.
Draw offer... as a tactical ploy?
In my view, it is unsportsmanlike and borderline unethical to offer a draw in a hopelessely lost position. First, it is insulting as it presupposes that your opponent is an idiot who cannot recognize that he should win the game. Secondly, if the only purpose is to interrupt the opponent's concentration and distract him, this is against the rules.
I've noticed that a lot of the young kids playing in USCF tournaments offer draws when they are down material. In one case, a kid offered me a draw when I had a forced mate in 2. I actually laughed out loud when he offered me the draw, and players at the boards around us looked over because i laughed so loud. After the game, I advised the kid that it was impolite to offer draws when you are losing. He didn't seem to fully comprehend the concept, however.

If you are not that great in the endgame and you think your opponent is better than you in the endgame.
you can offer a draw in a unclear equal position.
many experienced players will think "the one that declines a draw loses" and accept.
that would be ok draw change to use.
even though I still think a draw should only be one 1 and win 3.

If you are not that great in the endgame and you think your opponent is better than you in the endgame.
you can offer a draw in a unclear equal position.
many experienced players will think "the one that declines a draw loses" and accept.
that would be ok draw change to use.
even though I still think a draw should only be one 1 and win 3.
Unless it is an obviously drawn end game, if my opponent starts offering draws in the end game, that is my signal they dont know how to play that end game. I decline it, and play on.

I've offered draws for psychological reasons twice.
In one situation, I saw a line where my opponent could win a rook, but would be left with a queen trapped, leaving open a repetition. I offered a draw against my stronger opponent (about 200 points stronger), both as a psychological ploy and as a message that I saw the repetition and would move to initiate it if she took my rook. She refused my draw and withdrew the queen from attack. I would go on to win this game decisively in 31 moves.
The other situation was, again, against a much stronger opponent (she had some 400 rating points on me). Unlike before, I had a small advantage and no threat of a draw. I offered a draw here, thinking my offer might confuse my opponent into overthinking things. However, my intention was to continue the game and try to preserve my minimal positional advantage. I didn't think my opponent would accept my draw; I thought she'd think "who does this b-rated player from Alaska think he is? I'm an expert! I have to win this game!" My opponent, however, accepted the draw, afraid to continue the game at a disadvantage. This offer, intended purely as a psychological ploy, had backfired. Later analysis revealed the small advantage was....merely a small advantage and nothing absolutely definite.
This isn't to say that a draw should be offered at random; you have to find the right situation and the right opponent to employ it against. Otherwise, it can rob you of the chances to fight on in a position.
In chess, I've always regarded gamesmanship to be a welcome thing. That's not to say that there aren't limits to it, but as long as one operates within the rules of chess, I wouldn't care what an opponent does during play. I would hope that other players understand this as well.
It is nearly the same as playing the Blackburne Shilling Gambit trap.
and you offer draw your opponent may think you are giving a way a pawn.
http://en.wikipedia.org/wiki/Italian_Game,_Blackburne_Shilling_Gambit
and fall the trap.
I think it is not a ploy I would recommend.
as noted in the wiki
"Graham Burgess writes that 3...Nd4 is also known as the "Oh my god!" trap, as for full effect, Black is supposed to make this exclamation, pretending to have accidentally blundered the e-pawn. Burgess condemns this behavior as unethical, and notes that the trap, if avoided, leaves White with a large advantage.[6]"
your draw offer is the same as oh my god reaction.