There's no specific way, you need to check the application settings.
You need to remove the link between the two sites. You can do this in your Twitter settings.
To stop Picasa from automatically updating thumbnails, you can disable the thumbnail generation feature. Open Picasa, go to "Tools," then select "Options." In the "General" tab, uncheck the option for "Automatically update folders" or "Automatically scan for changes," depending on your version. This will prevent Picasa from automatically updating thumbnails for new or modified images.
Go to your account settings on Twitter and then the applications tab. Revoke the access so that MySpace will stop connecting to your account.
Once the app is updating, you can only pause the update. You cannot stop the update. You will have to wait until it is finished updating to do whatever you want with that app.
To stop uTorrent from updating, you can disable automatic updates in the settings. Open uTorrent, go to "Options," then "Preferences," and find the "General" section. Uncheck the option for "Automatically check for updates" or similar wording. Additionally, you may want to ensure that your firewall or antivirus settings do not allow uTorrent to access the internet for updates.
You can block Aaron Carter on Twitter to stop him from following you.
esay
Revoke the applications access on Twitter.
it was announced on decemer 2, 2011
How to stop automatically login in gmail whenver you just type your name and the password appears automatically?
Stop tweeting
Go to your settings on the web version of Twitter and remove your phone details.