For me height isn't a huge deal either, but all other things being equal, I do prefer if a woman is slightly shorter than me.

A large part of the community is not story-friendly either.

I mean quality stories.

You can write real literature, with interesting characters, beautiful descriptions, unique plot, but you won't attract an audience. If you want that, then you should first pick a title which sounds simple so people will click on it. The first word of the title, and the first word of the story must be a woman's name. Like "Lucy's gain." As a description write something like "Lucy is a girl who gets very fat". Then in the story, just start with an info dump of her weight and hair color. Spelling and grammar is completely unnecessary. Characterization is also completely unnecessary. Write a cliché plot about someone who always wanted to get fat (or a cheerleader who always wanted to stay slim but then she changed her mind on the fly without any explication, to become the fattest woman on the planet). Voilà, ten times more views and likes than the stories which try to bring quality.

Besides kipteitei, some who were not mentioned:

Kastemel
Bredy
FoxFire486
theamericandream
aka-fa
kawaiidebu
adjectivenouncombo

Also GuardianDraca used to draw pretty amazing comics, but she is not active anymore. Might still find something on her twitter, occasionally.

Isn't the best way to gain to eat most of your daily intake in the evening, when the metabolism is slower?

I think so because so many weight loss coaches always telling to eat most of your "calorie allotment" in the morning and eat very little in the evening.

Not if we terraform it first.

Or on the Mars, where gravity is smaller.
A 300 kg (660 lbs) person is barely able to move on Earth, but would weight only 38% of it on Mars, that won't affect your mobility almost at all.

You would actually need to weigh 300 pounds in order to be able to move around, otherwise your feet will not have enough traction with the ground.

True, if you shine the "Yes, I know I'm fat, so what" attitude, and you look confident and happy, it's much less likely for people to pick on you and harass you for your weight.

Also, harassing people for their weight is more common for schoolchildren, most of them will grow out of it as they get older.

It would be really useful if we could bookmark or "watch" other people's stories, so that we receive a notification whenever a new chapter is added.

I've known two young women who wanted to gain. Both were thin, both ate a lot, but they couldn't gain.

One of them then suddenly gained a lot of weight in less than two years, it was more then what she wanted, so she regretted it. It took her a lot of work to lose about half of it.

The other one is still unable to gain any weight at all.

There has been a lot of talk about immobility, but it is always handled as one monolithic concept.

But it can have many different stages, so I'm curious what you mean when you say you want yourself or your partner to become immobile. In real life or fantasy?

1. nigh-immobility. You can't get up by yourself, but if someone helps, you can still stand up and maybe move a few steps on your own.

2. completely bed-ridden. Can't walk even with help.

3. world record holder.

4. higher than world record holder but can still put food in your mouth with your own hands, even if with great difficulty.

5. can no longer put food into your mouth with your own hands, can't even raise hands. The highest weight one might get in real life with our current understanding of biology.

6. Utterly ludicrous sizes only futuristic biological and medical sciences would make possible. Sizes only seen in comics. Laying in a huge bed and belly outflowing it, reaching the ground.