I'm a first-day, waited-in-line, Pre- owner and WebOS fanboy. I can relate to just about everything I've read in this thread so far.
Last week I made the switch from a Sprint franken-Pre+ to the Nexus S 4G. I am a huge advocate of WebOS but it didn't look like Sprint was going to embrace the Pre 3 and I wasn't ready to switch carriers. I purchased an Epic 4G for my wife and loved the screen but hated the bulk. I'm not someone who would use a landscape keyboard so I decided to try out the Nexus S 4G to see if I could go without the keyboard.
I'm sold. Here's my list of Nexus S 4G Pros and Cons:
Pros
- The SuperAMOLED screen is just... WOW!
- Good battery life (just don't run Latitude).
- Voice commands work very, very well.
- More options are built into the OS settings screens.
- Google Maps - functionaly much better than in WebOS.
- I can read Adobe PDFs! And not just the odd one out of five. Imagine that.

- SPEED!
- This hardware seems much more robust than the Pre (of which I've had eight).
- I've found that Android is very capable at supporting the addition or substitution of stock apps with improved versions (ie, a new email program, new messenger, etc). The replacement apps hook into all the places you would expect them to throughout the OS. This is an area where WebOS is improving, but the Android implementation is already great.
- Text selection, cursor navigation, cut, copy and paste. Functionally it varies from app to app which I don't like but on WebOS I found it almost unusable so Android gets a tip of the hat here.
Cons
- Notifications - Wow Android is poor in this area.
- I want JustType/Universal Search. It takes way to many presses to get anything done.
- I miss homebrew and the corporate/hacker partnership. Still, it could be much worse (iPhone).
- The IMAP client is crap. No IMAP IDLE push and no way to folder emails. Really cave-man stuff. I am using K-9 now and that is better, but I would like it better with the white-on-black UI of the stock mail app.
- Messaging app will only send one message and truncates to 160 chars. It also doesn't show a character count until you are almost at 160.
- I miss swipe-to-delete, mainly because I can't stop myself from doing it on Android which rarely has a good result

No big deal
- Multitasking is more difficult, but not unmanageable.
- Gestures would be a plus, but having a back button always in one place is a good start.
- Lack of physical keyboard is a bummer but is offset by the very good onscreen keyboard and the fact that there are fewer moving parts that can break. I thought I would miss this a lot more than I do.
- I never used Synnergy. I kept all my contacts in Google on the Pre, so loosing it was inconsequential to me.
So the absence of a good Universal Search equivalent and physical keyboard is offset by the really cool voice recognition -- I'll call that a wash.
The notification system is something that Google needs to address. With no indicator LED and no prominent notifications, calls/texts/emails go unnoticed and unanswered for a longer period of time. I keep getting text messages without realizing that they are sitting on the phone. Boo. My suggestion to Google: just rip off WebOS notifications. Blackberry ripped off the rest and they haven't been sued yet!
You will notice that I didn't list the absence of touchstone charging as a Con. There's a good reason for that:
-darren