That's the concept behind Meosphere, a seen-it, heard-it, ate-it, owned-it, done-it-more-times-than-you Web site that tallies your interests and experiences and lets you share - and compare - them with others.

The site, created in February by Farmington entrepreneur Eric Eliason, provides more than 2,000 ready-made checklists, from ballparks visited to animal parts eaten, and, members can create and suggest their own. They can upload photos and jot down memories, though some recollections, such as those accompanying the "cars you drove in high school" list, may not be appropriate for dissemination.

And later this week, users will be able to map their meospheres, print them and, if they are so inclined, take them for show and tell. If you're dad is Eric Eliason, you could consider it an act of reciprocation.

After all, the 34-year-old entrepreneur got the idea for his Web site from his daughter, Tori. By 2 years old, the toddler had been to seven countries and 25 states, and her parents, worried she wouldn't remember the experiences, started making lists. Today, Tori is a third-grader and a voracious reader.

List suggestion: Top 10 List of Playground Taunts, led by "My meosphere is bigger than your meosphere."

"There is definitely a bragging-rights aspect to this," Eliason says. "The culture of the entire company is, 'What are you doing to expand your meosphere?' "

In just a month, the site has netted users in 72 countries, including Cuba and Iran, proving Americans aren't the only ones obsessed with lists, from box scores and baby names to Letterman's Top 10 and Forbes' Richest People.

And capitalizing on the phenomenon has become a competitive sport of its own.

In addition to small startups such as Meosphere, major media companies are buying and bankrolling list-centric Web sites, according to The Wall Street Journal. In addition to Listmania!, Amazon.com funds a site where users can track the books, movies and music they own, and another, 43things.com, where users lists things to do before they die.

Add the popularity of social networking sites, the need for advertisers to pitch their products to target audiences and the fact that lists are a cheap, fast way to create Internet content, and it's easy to understand why Eliason is optimistic about his new business venture.

Every day at 3 p.m., his employees gather on couches in their Kaysville office and brainstorm new lists. The company also gets permission to use those compiled by travel writers, food critics and other authors in exchange for providing links to buy their books.

Judging from the shelves at the King's English bookstore in Salt Lake City, Eliason hasn't begun to tap the market. Glance in any direction and you'll spy a book based on a list - 150 Best American Recipes, The Top 10 Writers Pick Their Favorite Books, 1001 Things to Do Before You Die.

"People love this stuff," says Anne Holman, the store's marketing manager. "Maybe it has something to do with our short attention span, or maybe we want to feel like we're accomplishing something."

For more on that, we turn to Holman's 14-year-old daughter, Jane Berger, obsessive listmaker, messy room keeper and potential Meosphere spokesperson.

Homework to do, stuff to pack, presents she wants. "Lists help me feel organized," Berger says.

The teen keeps a diary, writes in it every night - random things such as how she's feeling and what she would like to do over the summer. She also has a U.S. map with pins denoting places she has visited. And she saves all her lists so she can look at them later.

She keeps them in a wooden desk filed under "art."

lfantin@sltrib.com

Check it twice

A slew of new Web sites allow people to create and share lists. Here's a sample:

* Meosphere.com

* 43things.com

* rememberthemilk.com

* beforeyoudie.co.uk

* blablalist.com