Okay, I'm just so freaking excited that Paul has FINALLY joined Twitter, and so are some other celebs.
Read here what they had to say.
(PS: If you've seen others, please put them here so I can add them to the list. :D)

NINA DOBREV:
-Paul Wesley has added an "@" to his name? HUH??? what has this world come to? I never thought I would see the day.
-Yes.. It's true @ paulwesley
-Finally everyone will stop asking me to convince him to शामिल होइए twitter. Because he did ... @paulwesley is REAL. And No I had absolutely nothin
To do w/ it... It's like he woke up one day+a light bulb suddenly turn on + he thought "I have an itch I want to scratch; I want to tweet.

BETHANY JOY GALEOTTI:
- @paulwesley हे kid! What's shakin? Welcome to Twitterverse!

CANDICE ACCOLA:
- Everyone welcome @paulwesley to twitter!And send satan a sweater and watch for pigs flying in the sky cause I never thought I'd see the day!

IAN SOMERHALDER:
- @paulwesley WTF?Stefan is on Twitter!On set shooting with my brother Paul Wesley (Aka) Stefan Salvatore-welcome to the twitterverse brother

JULIE PLEC:
- Everyone please give a big welcome to the one, the only, @paulwesley.

Matt Davis:
- Oh yeah, Paul Wesley is on twitter now... #justsayin

PAUL's REPLY XP:
- A truly sincere thank आप to all of आप for the warm welcome...

Follow Paul on Twitter!

<3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3