41.  While most boards may realize all of this in theory, it is not so easy to put such a basic communications tool into regular use.

42.  While most nutritionists continue to reflexively discourage regular use of lard, not everyone agrees.

43.  But regular use and high doses also can cause ulcers because ibuprofen first travels through the stomach before ever reaching a sore joint.

44.  It is also the oldest Olympic stadium still in regular use.

45.  It is also the oldest main Olympic venue still in regular use.

46.  Its regular use thickens the semen and is valuable for impotency.

47.  Regular use of aspirin as an effective circulatory therapy has proven to reduce the risk of blood clots that can trigger a heart attack.

48.  Regular use of the bridge would speed up delivery by allowing large aid shipments to move directly by train from East European countries into Afghanistan.

49.  Researchers also warned that regular use is important.

50.  The regular use of Israeli tank fire would mark a serious escalation in the fighting, which until now has mostly been limited to gunfire exchanges.