karkadan - 10:42 pm on Jan 10, 2013 (gmt 0)

#1 If all your links to home have the same "phrase", then you might be penalized. How long? Google only knows.

#2 There are some cases that Google simply takes out an URL from their search results. Even for a week. Maybe you have not done anything to the URL. Then after 1 week or 4 weeks, the URL appears, starts climbing again, and stabilizes. (or sort of).