I honestly this this site is 100% BS.
I was curious about that too. However Uberprints.com and ratecomedy.com has big ads at the bottom of the site, so my guess is they're fitting the bill.
Plus this was on wiki:
On June 13, 2006, Diamond appeared on The Howard Stern Show to request financial assistance. Diamond was given 30 days to come up with $250,000 USD or risk losing his home for failing to make payments on his land lease. His "solution" was to sell t-shirts for $15 that had "I gave 15 dollars to help Screech save his house" emblazoned on the front. He said that he would need to sell 30,000 t-shirts to completely cover the costs. He also claimed that he has a 10 inch p*nis.
On June 14, 2006, Diamond did a phone interveiw with MTV Live the flagship show for MTV Canada promoting the sale of his "D-Shirts" to save his home. During the interview host Daryn Jones' first question to Diamond was what the name of the dance that he and character Lisa Turtle (Lark Voorhies) did in the episode of Saved by the Bell where there was a dance contest. Diamond responded "The Sprain". Coincidentally, the next day on June 15, 2006 that episode aired on TBS in Canada at 08:30 EST.
If he's making press releases it can't be that fake, otherwise he could be sued for more then his house.