The King's Gambit is a very dangerous opening. For both sides! And I should know, I've played hundreds of games with white and black in it.
The Accepted variations offer black at least equality, the Falkbeer countergambit is also quite fine, I usually employ the Nimzowitsch variation 3. ... c6 nowadays. The FCG and NCG offer white some opportunities at a little edge, but it's not as defensive as KGA.

The From's Gambit is fun to play. +/- in most variations you say? Not in my experience but you're welcome to disagree. I'd never play the reversed Dutch, I like the Dutch defense too much for that.
The Bird isn't a threat though, it doesn't really require me to use a defense I would use against 1. d4. I could set up a QID and have an just about an equal game.
If I recall my online games, 1. ... f5 works fine if you're out for a draw.

I've been playing 1. e4 for as long as I can remember, and if you know it well, it's probably a better way to try to achieve an advantage out of the opening. But the problem with 1. e4 is that maybe 50% of all chess players play 1. e4, so, if you play that, your opponent will know what to play. He either knows the sicilian well enough to get equality, or he knows the French well enough, or he knows the Open Games with 1... e5 well enough to get equality in most lines. So if you're white, and you don't know all of black's choices against 1. e4 well, then black has a good chance of getting an advantage.

That's why I prefer an opening like 1. f4. It's considered "bad" by most, and thus most don't *know* what to play against 1. f4 (of course they could choose a basic plan like 1... d5 and 2... c5, but they can't play theory they know, so they have to make up moves too). So if you play 1. f4, the chance is big that you're better prepared, because you don't have to know the sicilian, french, open games, scandinavian, alekhine, etc. but only a few set-ups black can use. And if you know what to play against those set-ups, and black doesn't, then you can still easily get an advantage.

Correct me if I'm wrong

I played one game as black against 1. f4, and since I didn't have alot of material to prepare for him (I knew he would play 1. f4), I just looked at a game he played earlier that tournament, and tried to improve on that game somewhere.

<Perseus> I've already posted this before in the links provided, but here it is again anyway.

The From's Gambit accepted has four major lines, the Lasker, the Schlecter, The Mestrel and the Full Mestrel.

The Lasker is probably the most common, but has slowly decreased in popularity over the ages, and is currently going through a crisis which it probably will not recover from. The Lasker starts as 1. f4 e5 2. fxe5 d6 3. exd6 bxd6 4. Nf3 g5, and now white has three main responses, the old line was 5. d4 g4 6. Ng5 sacrificing the knight a couple moves later to shatter black's kingside pawns even more and attack there. This was for many decades considered a sound sacrifice, however modern analysis has shown that black has a good defense against it and as such it has more or less dissapeared. The second line is 5. d4 g4 6. Ne5 trading off knights and taking the doubled pawns, but going into the endgame a pawn up, this isn't the best, but is allright and is effective against computers. The best variation is 5. g3! g4 6. Nh4, and now black has two main tries 6...Be7 7. Ng2 which is better for white, his position is slightly uncomfortable, but black has not enough compensation for the pawn. the other (and more common) line is 6...Ne7 7. d4 Ng6 8. Nxg6 hxg6 9. Qd3! defending against the threats and maintaining white's advantage, a perfect example of this line is the IM vs. GM game at this link Timothy Taylor vs Julio J Becerra-Rivero (2005) , basically in this line black has a small initiaitive (every move contains a trap for about 8-10 moves or so) but if white defends properly he should have a superb game, +/- .

The schlecter variation is 1. f4 e5 2. fxe5 Nc6, this is very common and is the main lines i a couple computers, based on the fact that if 3. Nf3? g5! gives black a much stronger than normal Lasker. However the correct response 3. Nc3! giving back the pawn 3...Nxe5 4. d4 Nc6 5. e4 etc. gives white a great game with a nice center and open f-file, +/- .

The Mestrel variation is 1. f4 e5 2. fxe5 d6 3. exd6 bxd6 4. Nf3 Nf6, without following up with 5...Ng4, this variation doesn't give black that much play, and he is almost always simply a pawn down with little or no compensation, +/- .

The Full Mestrel is one of the craziest and most wild variations in all of chess, although not especially good for black if white knows what he is doing. I've already make a lengthy post on it at the The Bird's Opening (1. f4) page, kindly view it there if you are interested. Basicially though, by move 8, white has 3 moves that maintain his advantage, and can force a perpetual check if he wants in one of them. This should be +/- again, but it's not nearly as well analysed, so for that reason alone we'll say it's +=

In general, the From's Gambit has a good reputation, but undeservedly so, if white knows what he's doing he can acheive a superior position without much trouble, comments? Oh as a note, i will be gone until Wednesday or so, so might not be able to answer until then.

I must have overlooked the link before, my apologies.

I don't put much faith in computer evaluations in positions I really like playing. I have a typical approach to chess openings. I like getting pieces out, making natural moves, get a position going that has room for "chess to happen".
You note the Lasker line in the From's gambit [1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5], for me that line is unacceptable. Though I'm certain 4. ... g5 has its merits, I wouldn't go into it on principle.

4. ... Nf6 is what I play. 5. d4 0-0 is an old Larsen line I've tried once online, it's 'okay'. Usually I play 5. ... Ng4, which is the sharpest try in my opinion.
There are a lot of crazy variations, as you say, poorly analyzed. I suppose that's because the Bird doesn't get played too often at the highest level, never mind the From's. I lack the time for proper analysis at the time, but I'll get back to it.