I've been playing Stardoll for 8 years now. I have seen great times but SD has increasingly gotten worse over the years. There are so many issues. One being Stardoll doesn't listen to their own customers. We ask for many things to be fixed but they never fix it. If they do fix it, it's many years later. They also keep increasing the price of in-game items. Like you used to be able to get a dress for 10 stardollars, but now it can be up to 30 stardollars. Not only this, the amount of stardollars we can buy hasn't changed, so we are still getting the same amount we always, so we are not getting our money's worth when we buy stardollars. Also, not all players can afford to buy in-game currency, so SD can sometimes seem like a pay-to-play because it is very hard to get stardollars without spending your own real life money.
New players find it very hard to get established on the game because Stardoll is making it harder for new players. They also have recently level-locked items that were not level-locked previously. This is mostly because of a loop-hole people use to game the system, called "fakies" in the game. A "fakie" is where you create a fake account and use the stardollars you get at the start and from preforming tasks to buy gifts for their actual account.
They also currently have a major problem with hacking. However SD ignores it and keeps saying "don't give out your password" even though most of the dedicated players who have been hacked don't and haven't given out their password.
There are also lots of phishing scams for the new players. They promise free in-game currency, but they take your pass and use your account to spread their phishing scam.
Lastly, the community is toxic. I don't socialize on SD anymore. I guess this isn't Stardoll's problem per se, but it's a problem on the site. I became involved with other players off site and they are horrible, petty, greedy, childish and catty. There are some who are awesome, but the majority are not.
All this being said, there are good things about Stardoll that have made me stay. The biggest being the fact I can express my love for fashion and culture through Stardoll. I can make my doll look however I want and dress her however I want. You can make your doll vintage, emo, goth, scene, high fashion or whatever you want. You can also make your suite however you want.
If you have money and can buy stardollars you can get so many things. You can make your own hair, jewelry, decor and fashion.
If you play for a long time you will accumulate items that are worth much more later on, called "rares" in the game. I have a few rare items only because I've been playing for 8 years.

I don't plan to quit this game even though many people are quitting this game. I still find it fun and rewarding, so I'll stay