I have lived in Florida almost all my life. Through high school
I lived on the east coast in near the Cape Canaveral (where NASA is.) I moved to Orlando once I started going to Full Sail, the college I am attending. I can't speak for the west coast of Florida like Tampa, but I can for Orlando and the central Florida area. I don't know why those guys said to stay away from Florida, unless they just really hate the heat. Anyway, on to you questions:
1)The technology sector in central Florida is pretty good. The entertainment, tourism, and areospace industries in the area
always use web and mutilmedia. I have friends and family in all sorts of multimedia jobs around here: My stepbrother makes websites and media for an areospace company, a friend from my church works on developing virtual reality training programs for astronuats, and a few friends do freelance web design. And that's just the stuff that comes to mind right now. With some proper research, I don't think finding a job in the multimedia field would be a problem.
2)The summers in Florida can be hot and muggy, but they never bother me that much. I mean, unless you are a constuction worker you probably be in air conditioning most of the time anyway. And the bugs are only bad near the swampy areas. Mosquitoes aren't really a problem over here in Orlando, but we do get those love bugs pretty bad some times.
3)Living by the water isn't a bad idea, until the rent comes due or a hurricane shows up. Flooding is rarely an issue until a nasty storm comes, and then in can flood rather badly in some areas. Living near the ocean is typically much more expensive, but if you are looking at living near a pond or lake it won't raise the price as much. The lakes tend to be mosquito breeding grounds though; not always, but if bugs are a big deal for you then you might want to look into the waterfront areas carefully.
4)The schools in Floida are not bad; I would say that they are average. I never had much love for the public school system though, so you might not want to consult me about that subject, considering my bias.
5)I really don't know what the bad parts of Orlando are. I live in the Winter Park area which is on the outskirts of Orlando proper, and it is pretty nice. I could possibly help more on this topic if I knew more about waht you were looking for.
6)As for nightlife, I know Orlando has a big one, because of the tourism. the downtown area has clubs and all that. I have never been much of a "clubbin" guy myself though, so I can't gauge the nightlife really except from what my friends say.
7)My general impression of the place I live is pretty good. I am in no hurry to leave, and I would only do so if I found a good job in computer animation elsewhere. Otherwise I think I would stay here.
In any case, I this information is of use, and I, like DragonGX, shall extend an invatation to Personal Message me if you need finer details. Glad to be of service in any way I can.
God made Heavy Metal, and He saw that it was good.