The one thing I don’t do:
“Don’t forget to include your phone number and your address. You never know how someone will find you.”

I can’t imagine that someone who finds me on LinkedIn needs to send me a letter, but I understand the concern about limiting an possible contact option. Phone # is personal preference, but I prefer email over phone for first contact, so I do not include it there.

Reminder to all: Applications are good, but think about whether you will manage those apps! Same applies to adding your twitter account. Being a active participant means always being conscious of what your LinkedIn connections can see.