How do you know if someone else has signed in your account(msn,yahoo...etc)?
437829
Well with Yahoo if its at the same time it usually wont let you in , and say s you are signed in on another computer...\nAs for msn I'm not sure unless it simply wont sign you in.\nOther than that I don't know.
78147
Which account? \n\nIf it is something like an AOL account, you can usually check the times of dial-up usage. \n\nIf it's an e-mail account, your best indication are often the read/unread message markings -- if you ever get messages marked as "read" that you never did read, someone is using it.\n\nThe best way really is not to worry if someone is using it -- just change your password, and make the new one strong (at least 8 characters long, no common words, at least 2 numbers and 2 non-alphabet characters).
191165
You can send an instant message or email to that person and see if they respond. Otherwise, there's no way of knowing. Yahoo! will not give out information about you to anyone who inquires with your screen name.
390055
If it is not a picture on your system --- you may be right. Someone might of hacked your account or found out somehow otherwise.  Suggestion-- get a new MSN account with a differnt passord OR just change your password to a harder one so it will be very hard to guess on your current one.
883703
Usually when you make a msn account you have to have another email account if he can remember what email he put in when he signed up he can go to here and look it up.Just go to forgotten password and they will send it to his email account with his id.Hope this helps
259798
Yeah. MSN itself. Sign out and start another account. Its as simple as that. I have two MSN accounts with different Emails.
188898
Go to control panel.  Choose user accounts.  There should be helpful info or even icons showing all names having an account.  Mine has up to 10.
706079
it should be tied to his screenname... do a google search on that by entering  in the search box "screenname AND MSN" ... be sure the word AND is in caps as shown
440816
I am trying to sign in for the secont time. I did one a while ago. It tells me my e-mail address has already been used.
286957
It may be a 'false indication' if they're hiding from you.\nSometimes it even looks like someone is online when they've signed out hours before. They drop off when you try to write them.\n\nTheoretically, if they're offline, you can't see them... That is, unless they are standing in your line of sight.
470006
If you mean is there a database or the info stored somewhere that would tell you that, then no.\n\nYou can add the person's ID to your messenger & watch to see when s/he comes & goes offline.
1069853
Yes, they do have the ability to monitor the contents of your e-mail (it *is* their servers).  Look at the Privacy Policy located at the bottom of every Yahoo Mail page.
435110
that's not possible u can see if u are online a window will appear "You were signed off beacause you were signed in to another location" or somethin like that
439448
contact yahoo help immediately,\nchange your password. \nmay be someone is gaming with your account.
307255
change your password, someone else might be using your account... Or you left a  different computer / cell phone logged in as you and forgot.
555727
In MSN Messenger: No, if you block someone they can't see if you are online the next time you log in. So it could be the same for Yahoo
1137069
You can hit "sign out" , then "sign in" and sign in as a different user.  Check your email once you are signed in as yourself, and then don't forget to sign out again.\n\nIf the issue is that you don't want ot sign out the from the other person's account because of all the settings that risk going haywire (like Launchcast signing out or something), try opening up a different browser, such as FireFox and signing in there.\n\nIf someone is signed into Verizon Yahoo! for DSL via the Verizon Yahoo! for DSL browser, they will be signed into that account in Internet Explorer, Launchcast Music Engine, and some other IE based services, but they won't necessarily be signed into Yahoo!  services that aren't interrelated: for example, when you are signed into Yahoo! via Internet Explorer, you aren't necessarily signed into YIM or FireFox, as they read their cookies independently.  So, if you open up Firefox and sign in there, it won't effect any other services that the other person is signed in on.\n\nI hope that makes sense.