just bought an android phone. Samsung Galaxy S 2.
I use software sometimes:

twicca twitter client. reminds me a bit of #gravity on symbian.

official facebook (kinda don't like) - also, starts up on boot!

read it later

k9 email - fixed width fonts, nice for diffs..

y5 - uses GSM tower data to enable/disable wifi

whatsapp - sms replacement service, using your data plan

do it tomorrow - simple short-term tasks

smooth calendar - shows my upcoming calendar events

Fancy Widgets - just for the weather widget

winamp - it really whips the llama's ass

Help! How do I disable wifi-sharing from starting on boot?