It can keep you active and involved in a game, reward game play and allow expert players to teach others.

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The best way to prevent dementia is to keep the mind active, whether it's by reading books, doing crossword puzzles, playing sudoku, or participating in other creative endeavors, says Kennedy.

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"We were just doing anything and everything to stay active and keep his mind off it, " Andrea said.

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It is important to maintain an active routine, to keep physically fit and mentally active.

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The company may get money from advertisers, but it needs to keep the users who click on those ads engaged, active and happy on the network.

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The company is most likely not conducting active operations (a shell) but continues to file statements to keep it in compliance (financials, required reporting forms, etc.).

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Lulzsec was very active in 2011, but the arrest of many of its members has forced it to keep a lower profile.

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