1. Live Meeting Recording (LA) Full single-user editing (LA) Pointing (LA) Could share taxonomy slides also (AB) High feedthrough (LA) High feedback (all) –1 second Jitter in scrolling (LA) 2 –User? (LA) Non-shared app shared? (LA) Only host copy/paste (LA) Floor control awkward (all) Only exposed regions of shared app visible (AB) Sometimes exposed region of non-shared app visible when switching apps (AB)

2. Google Spreadsheet Some single-user functionality missing (LA) –Shortcuts, row/cell hiding (with so many rows!), buggy formatting, spell checking Conflicts possible (BC) New row additions disorienting (LA) Non-incremental auto- refreshing (LA) Lack of pointing (LA, BC) View awareness (LA) Concurrency possible (LA, BC) Low latency Built-in chat (LA, AB) Server-based, can be accessed anytime (BC)

3. Groove Workspace vs. Mail Merging (BC) No attachment overhead (BC) Not free (BC) Not swamped with emails (AB) Audio chat (LA) No merging (AB) Can get data only from connected user (BC) No version history (BC, LA) Can overwrite changes (LA) No backup (LA) Prefer manual merging (LA)

4. Groove Co-Edit using Word Good for asynchronous editing (AB) High latency (AB) Single inputter (AB) Workspace creator can always take control (LA)

5. Groove Text Editor Concurrency possible (BC) Warning when concurrent editing (LA) Latency in change propagation which overwrote text or created new copies? (LA) Need to save changes? (LA)

6. Groove Spreadsheet Concurrency/Undo Last change wins (LA, AB, BC) But no notification (LA) User’s last change undone, possibly undoing later changes by other user (LA, BC, AB) Concurrent undo undoes each user’s change (LA) Insert/Delete Row broken (BC)

7. Writely Concurrency/Undo First person’s overlapping change accepted (LA) Non overlapping change in same para creates copies of para? (LA) Undo works only locally (AB) Undo works only if one user edits (BC) Can only undo one’s changes (LA) Can undo after saves (LA) Concurrent undo undoes each user’s change (LA)