Charity of Yahoo! Japan

　Yahoo! Japan is conducting a charity event that the company will donate 10 yen per every person who search for "3.11" on Yahoo! search today. The donation will be used for recovery of Tohoku region where was hit by a huge earthquake, tsunami, and nuclear crisis. Yahoo! Japan conducted this charity event also last year, and the company had set an upper limit to 5 million yen corresponding to 50 thousand searchers. However, over 250 thousand people had searched for "3.11" in that day, and finally Yahoo! Japan ignored the upper limit, then over 25 million yen was donated. I didn't know this charity event last year, but I participated to it this year. I wonder how many people search for "3.11" on Yahoo! search today.

• Japan is conducting a charity event that the company will donate 10 yen per every person who search for "3.11" on Yahoo!
• Japan is conducting a charity event and the company will (or: pledges to) donate 10 yen per every person who search for "3.11" on Yahoo!

• The donation will be used for recovery of Tohoku region where was hit by a huge earthquake, tsunami, and nuclear crisis.
• The donation will be used for recovery of Tohoku region that was hit by a huge earthquake, tsunami, and nuclear crisis.

How very generous of them!

• Japan is conducting a charity event that the company will donate 10 yen per every person who search for "3.11" on Yahoo!
• Japan is conducting a charity event in which the company will donate 10 yen for every person who searches for "3.11" on Yahoo!

• The donation will be used for recovery of Tohoku region where was hit by a huge earthquake, tsunami, and nuclear crisis.
• The donation will be used for the recovery of the Tohoku region, which was hit by a huge earthquake, tsunami, and nuclear crisis.

• Japan conducted this charity event also last year, and the company had set an upper limit to 5 million yen corresponding to 50 thousand searchers.
• Yahoo! Japan conducted this charity event also last year as well, and the company had set an upper limit of 5 million yen corresponding to 50 thousand searchers.

  (or: had set THE upper limit TO 5 million yen)

• However, over 250 thousand people had searched for "3.11" in that day, and finally Yahoo!
• However, over 250 thousand people had searched for "3.11" in that day, and finally Yahoo!

  To walk through the logic of why we use "had set" in the previous sentence and "searched" here:
  Time point 1. Yahoo sets the limit.
  Time point 2: 250 thousand people search for "3.11."
  
  Since we use the past tense to say that 250 people searched for 3.11, if we want to talk about something that happened even before then, we say "Yahoo had set the limit."
  
  Tricky!

• Japan ignored the upper limit, then over 25 million yen was donated.
• Japan ignored the upper limit, and over 25 million yen were donated.

  I think that WERE donated is correct, since it is plural.
  
  If we were talking about dollars, then "25 million dollars were donated" is absolutely correct, and "25 million dollars was donated" is absolutely wrong.
  
  Since "yen" (1 yen) and "yen" (>1 yen) are spelled the same, it gets tricky, but I think you have to treat it as plural.

• I didn't know this charity event last year, but I participated to it this year.
• I didn't know about this charity event last year, but I participated in it this year.

• I wonder how many people search for "3.11" on Yahoo!
• I wonder how many people searched for "3.11" on Yahoo!

Nice to see a big company doing something to help people!