I've had a lot of broken promises given by Gaia in the past. Pretty much that powerups, Hoc, and Moga were going to make it so that development on zOMG! would continue when it just ended up getting rid of all the developer who had been involved with zOMG! Basically the lesson, don't spend GC expecting Gaia to fulfill promises because they'll end up breaking them.
I haven't bought GC since joining the site but I'm able to earn it through video offers. I try not to spend GC, but fail with things like scissor and nose mods. I guess best advice I could say, is don't expect to spend GC and not be able to keep your items forever. With how the site is set up, if a closure were to happen, you'll lose everything. Basically we are renting to use the items. So enjoy the items for your own personal enjoyment and creativity. I wish zOMG! would have gotten the new power-ups that were planned on. I guess with all the sales, I'm just tired of spam of items. I want perks for games, forums, guilds, cars, and houses now. Gaia rereleasing Halo started the MC broken promises and so did selling gold for cash which Gaia said they would never do. But yeah Panagrammic's journal is full of good information about inflation and promises that have been broken, so I'd recommend checking it out. I don't judge people who buy GC or GGs. I just think Gaia selling GGs was the worst decision that management agreed upon that affected the community badly.