She doesn't have a Twitter account.
Twitter feeds claiming to be Kate Gosselin appear all the time, all of them have been proven fraudulent. If Kate Gosselin does have a Twitter feed, it is not public. So the answer is, no one knows because it is extremely unlikely that it was Kate Gosselin's Twitter feed.
@katetodd
Kate Jackson was born on October 29, 1948.
Jackson doesn't have a personal twitter, but his band, 100 Monkeys, has one! @100MonkeysMusic ----------------------------------------- As of April 2011.. Jackson has his own personal twitter account. @JacksonRathbone
No she doesn't.
If you are talking about Michael Jackson's brother Marlon, then yes he does infact have a twitter account. His twitter username is Marlon_Jackson, he is rarely on it though.
Kate Jackson: As of Oct 2012.Singer: AliveActress: Alive
No.
@imMKOlsen
No he did not, "his" Twitter was created by his PR people.
No she does not.
No they don't.