One of the many reasons that I love How I Met Your Mother is that they mention specific websites on the show. And then they create them. They may have to, legally. I don't know. They do a fantastic job with it all, though.
For example, there is one episode where Barney had told one of his girls that his name was Ted Mosby (which is the name of the main character in the show). After he leaves her a generic letter and takes off, she makes a website: http://www.tedmosbyisajerk.com . It's an excellent site. It has a picture of the letter (which is great), it has portraits of "Ted" which are actually pictures of Barney, and it features a 20 minute background song about Ted Mosby being a jerk.
Interestingly enough, someone created the site http://www.tedmosbyisNOTajerk.com from the perspective of Victoria, who is a girl that dated the actual Ted Mosby on the show for awhile. Her site is funny, too. It has a page of testimonials from other girls that know Ted on the show. Then it has a page suggesting that the "Ted Mosby" from tedmosbyisajerk.com is actually Conan O'Brien. I don't remember this site being mentioned on the show, so I don't know if it's something Conan had created, or what.
Another site created for the show: http://www.slapbetcountdown.com (although this one doesn't seem to exist anymore).
And then there's http://www.guyforceshiswifetodressinagarbagebagforthenextthreeyears.com which they mentioned on the show recently. Marshall suggests they start http://www.lilyandmarshallselltheirstuff.com and Lily jokes about the other URL, which they check on the episode and discover exists. Marshall's URL links to an auction (of HIMYM stuff) to benefit the LA Children's Hospital. Lily's URL does exist, though. It's a French slideshow with a song all about a guy forcing his wife to wear a garbage bag. At least one of the pictures (I noticed) was taken on a HIMYM set. The lyrics are in French someone online has translated it. The beginning starts: but Darling, I want you to wear a GARBAGE BAG Please, for three years, only a GARBAGE BAG Darling, it’s prohibited not to wear a GARBAGE BAG Please, for me, wear this, wear this GARBAGE BAG...
I would be very interested to know about other fake websites created because TV show episodes.
Anyway, it's Monday evening and of course there will be no How I Met Your Mother this week, but here is some happy news: Season 1 had 22 episodes. Season 2 had 22 episodes. Season 3 had 20 episodes. Season 4 has order for...26 episodes!