This topic is pretty flammable, so before it's closed I'll just sum it up for you:

Xbox 360 has much better online features and connectivity
PS3 is all around a really good console

That's all I have to say about that.
Source: I own both

That's a flawed advise

You should consider the followings:
1. Which one is more powerful?
2. Which one can last 10 years?
3. Which one can play Bluray?
4. Which one can output HD surround?
5. Which one has free online?
6. Which one has original games?
7. Which one has a more active forum?
8. Which one has warranty?
9. Which one doesn't have the well known RROD?
10. Which one has superior FFXIII?
11. Which one is more sincere to the gamers by not buying games' rights?
12. Which one is more innovative by creating the revolutionary Move rather than copying the PS Eye?

1) XBOX360 is actually more powerful. Dozens of cross platform games proves it.
2) Both are destined to have same lifespan.
3) BD?? HD Mkv is better... Free somemore...
4) That is only useful for BD and if you have a high end HT system.
5) Free things no good. XBOX Online is the Best. This is Undisputable.
6) Sama saja lar, more or less the same.
7) Same.
8) Both also got.
9) PS3 has LYOD. XBOX RROD is now mostly a thing of the pass ever since the Jasper revision.
10) PS3 version Only superior in CGI due to more storage. FFXIII is not a triple A title anyway. I am playing it now...Zzzzz..
11) Huh???
12) Move is copycat of Wii Stick...you call that original ar?? PS Eye is only a 2D detector. Doesn't do 3D tracking. KINECT is first of it's kind.

Frankly no need to ask so many BIASes questions.

Only need to answer one.
1) Can PS3 do Dance Central which detects everypart of your body without strapping four PS sticks to your body??