As others have said, the back is not that comfortable as a sofa, definitely needs some kind of padding or layer of cushions added (especially to cover the top edge). All of the bedding I have for it fits into two of the drawers, leaving the third free for other storage

I've had this as my sofa for 5 years now, family who have slept on it say it's fine for sleeping (ikea changed the mattresses since I bought mine though). I kept catching my trousers on the drawer handles as they do stick out quite a lot, so very early on I swapped them for ones that sit flatter

The sun is out, and there must be thousands here. This is giving me life.

Oh how odd, I have people in sections in my work one that I haven't messaged in months and I don't think slack has ever hidden anyone from those (the ones in the default DMs section do cycle into the background fairly quickly)

If you right click on their name you can star conversations and then they go into a separate group in the sidebar.
If you're using a paid for version you can also create smaller groupings with "move conversation > move to new section" and create a section per team or whatever makes sense