Do you use lot traits?

Mostly on public lots. With lots being so big, most of my homes end up having all the necessary items for learning the most important skills (bookshelves, computers, a chess table, gym equipment, etc.), so I make sure to give libraries, gyms, etc. lot traits to help with building the relevant skills, otherwise I wouldn't even have a reason to go there.

I mainly use them on community lots. I do have one neighborhood in Oasis Spring and one in San Myshuno as an earthquake zone.

Yes, always. It's great for improving skills faster.

I love the lot traits. I often use those to my advantage. My favorites are fast internet, chefs kitchen, natural light, bracing breezes, sunny aspect, and home studio. It provides a great boost to my starter households so they can build their wealth quicker.

For that reason, I am not big on negative traits, although they certainly do exist. My real life house has some negative traits. I would say I have gremlins, cursed, and to a limited extent: filthy. Things break and get dirty faster than I can keep up with it.

I give many of my venues the Convivial trait so that Charisma builds faster on the lot. Gyms, spas and pools get Bracing Breezes. Libraries get Fast Internet, Science Lair and sometimes Child's Play if I have a kids play area there. Restaurants get Chef's Kitchen. For home use, it depends on my Sims' interests -- I'll usually do Homey and Fast Internet, then either something like Home Studio or Natural Light, then switch that out for Good Schools when my Sims have kids at home.

Yes, sometimes I forget about them but the majority of the times I use them. I like them to help with skills mostly, but I also like the Gnomes trait too.

I do! I'm one of those people who likes to make my sims as happy as I possibly can, so I put in traits that fit both the sims as well as give them a better environment to be in. I have an artist teen who paints all the time so I gave his house the trait that's good for painting and it makes me soso happy every time he gets that extra happy moodlet as he paints! ^U^

I also actually like the sparkles! I think they're really pretty and the first time I saw them, I was hoping that they would show up in the screenshot because I thought it was cute and pretty! >w< I've never been bothered by it. I actually find myself more irritated by the plumbob in screenshots that I am of the sparkles!

I use them on every lot unless I am doing a challenge. I do not use them when I play a challenge but I usually continue to play a sim or family after the challenge is finished because I can not let go.

To me, they're just an extra tool to make Sims' lives better or more interesting.
Oh, and those little lot trait stars? Vampires might not reflect in mirrors, but they do:
http://i.imgur.com/QPtlRei.png

I love lot traits and add it into all my builds