[Suicide Junkie]

As far as the accelerating expansion, sort of.

Consider the balloon analogy. You've got a superstretchy rubbery surface which is being inflated, at a rate such that two centimeters stretches to four centimeters every minute.

Lets add some starry anthills to the surface, such that most of them are emitting ants, all of whom crawl along the surface towards our hill. Ants crawling at the speed of light, which we will make a quite leisurely pace, say 8 centimeters a minute.

So the little photon ants crawling towards us are hustling along, but the space is expanding so their trips take longer and longer.

For the ants that start a centimeter away, no problem. They arrive before there is much noticable expansion.
For the ants that start 8 cm away, they suffer. The distance between them and their goal is expanding at 8cm/minute at the start, so although they move away from their starting point quickly, they never quite reach the destination.

The ants at 7.9 cm distant make a teensy bit of progress at each step, and as they slowly close the distance, things get easier. All the ants from that hill will eventually make it, although it will take a long time.

So, with this rate of expansion, we can see everything closer than 8cm. Ants that started just short of 8cm will have taken the lifetime of the universe to reach us.

Now, if the expansion accelerates, then the ants from the 7.9cm distant hills can no longer reach us.
As such, the observable part of the universe has shrunk from 8cm radius to 7.9cm or less.

For "small" things like superclusters of galaxies, gravity's pull is plenty strong enough to keep things snug for now. They pull apart a little, but at the same time, keep moving towards each other. If the expansion keeps accelerating then gravity starts losing at smaller and smaller scales... all the way down to star systems. And then eventually electromagnetic forces lose, and rocks get pulled apart... and then nuclear forces lose and atoms get pulled apart. But by then, nobody will care.