Friends, for a long time i was finding about this trick But today is the special day that i have founded this trick and i m sharing it with u... I hv already searched about that and posted it in my blog but in that post we have to know the email id of that person which u want to send requests.....But this trick is awesome.
Steps To do:
1. Install tamper data addon or extension
* For Firefox * For Chrome
Okay Lets start Now the Trick...
Note: It is so necessary that your friends request are blocked.
2. After insatlling add-on, In your Firefox browser go to 'Tools' menu and under that you will find 'Tamper Data'
In google chrome go to settings at top right corner Tools> extensions.
3. Now, hit the 'Start Tamper' button. As your Tamper Data has started, its time to get back the 'Send Request' pop-up. Now, you can click on 'Send Request' button. After pressing that you will get another pop-up, and this time from 'Tamper Data'.
Hit the 'Tamper' button. Make sure that the URL that you get is similar to what you see in the pic above.
4. Now you will come across the above pop-up in which you have to do some modifications. As you can see, the highlighted option 'Submit' has the value '1' by default, you have to change it to '0' and press 'OK'
After you pressed the 'OK' button, you will be headed towards another pop-up saying 'Change content-header....' you have again press 'OK' and after you pressed this last 'OK' your Friend Request will be sent. Its almost done here
Follow the Instructions as shown and click the OK button..
If or when any other �Tamper with request� screens popup while you�re in the middle of editing the above data, just click the �Abort request� button on it to get it out of your way.
Once you click the OK button on the edit screen you�ll see a popup dialog Box, just click the OKbutton..
This needs to be done to keep all data proper before it�s sent..
Once you OK the Content Length dialog, you should see a pop up Box, as if you were never blocked from sending the facebook friend request...
If you get the original �This request can�t be sent� screen again, just do all of the steps over again..!!
You may have to do it a few times until it works. Eventually it will..!!
And that�s all there is to it!!
For more click here