I think this is a problem we are all tired of, wasting time to check if a planet on your list has been shared or if it is one of yours, or simply wasting purgers by just clearing out everything.
This has been made all the more annoying by the way the latest ally is ranked.
I propose a simple solution.
Put a new column in the planet list, that tells you whether the planet is Shared or Scanned.
It should be fairly self-explanatory.

Thoughts on this?

Can't you just look at the Actions tab and see there if it has been shared??

Yes, but having to open every planet to check when you have several hundred purgers takes forever, especially when you have a slow internet connection.
Would be much easier for me, and many others im sure, if there was a way around that.

A single planet purge takes half a second if i dont have to look, but 3 seconds when i have to check whether or not its shared.
If i'm purging 300 planets, that's 15 minutes as it is now, when it could easily be done in 2-3 minutes with a simple change.

Then go to ships log, look at the planets alerted, and find the letters that don't appear.

i.e. if there are no alerted planets that start with the letters B, C, F, M, R, S & T, then you can purge all of the planets that begin with those letters without even looking.

If course, that is a way around it, and there are other ways around it too, but it should be easy enough for Dan to add a new column in the planet section so that we dont have to go through all this trouble to purge some planets.

It could also just say "The effect cannot be used on this planet" like it does when trying to purge a planet owned by you

this or just remove the quick bar from shared planets

Either of these suggestions would work, and neither should take long for Dan to code.

The latter(remove quick bar) might be harder than you think(might or might not be, it depends on how quickbar is coded). The former should be fairly easy thou.