The list in monospaced `<pre>` code (with aligned columns) might be easier to read:

~~~mdown
Business Models
===============

Advertising
-----------
Display ads                        | Yahoo!
Search ads                         | Google
Text ads                           | Google
Video ads                          | Hulu, Twitch.tv
Audio ads                          | Pandora, Radio, Podcasts
Promoted content                   | Twitter, Tumblr
Paid-content links                 | Outbrain
Recruitment ads                    | LinkedIn
Lead generation                    | MoneySuperMarket, ZocDoc
Affiliate fees                     | The Wirecutter
Classifieds                        | Craigslist
Featured listings                  | Yelp, Super Pages;
E-mail ads                         | Yahoo, MSN
Ad-retargeting                     | Criteo 
Real-time-intent ad delivery       |
Location-based offers              | Foursquare
Sponsorships/Site take-overs       | Pandora
Lifetime, unique ad space          | NSFWCORP Conflict Tower, milliondollarhomepage.com
Sponsorships                       | Twitch.tv users

Commerce
--------
Retailing                          | Zappos
Marketplace                        | Etsy
Crowd-sourced marketplace          | Threadless
Excess-capacity markets            | Uber, AirBnB
Vertically-integrated commerce     | Warby Parker
Aggregator                         | Lastminute.com
Flash sales                        | Gilt Groupe, Vente Privee, Fab
Group buying                       | Groupon
Digital goods/downloads            | iTunes
Virtual goods                      | Zynga
Training                           | Cloudera(?), -> Coursera
Pay what you want                  | Radiohead
Commission                         | SharesPost
Commission per order               | Seamless, GrubHub
Auction                            | eBay
Reverse Auction                    | Priceline
Barter for services                | SwapRight

Subscription
------------
Software as a Service (SaaS)       | Salesforce
Service aaS                        | Shopify
Content aaS                        | Spotify, Netflix
Platform aaS (PaaS)                | dotCloud, Heroku
Infrastructure aaS (IaaS)          | 
Freemium SaaS                      | Dropbox
Ethical premium                    | Proposed by Clayton Cubitt
Donations                          | Wikipedia
Recurring donations (w/ rewards)   | Patreon
Sampling                           | Birchbox, BarkBox
Membership services                | Amazon Prime
Support and maintenance            | 10gen, Red Hat, Cloud66
Paywall                            | New York Times, Andrew Sullivan
Strict Paywall                     | The Information
Porous Paywall                     | NSFWCORP
Voice and video conferencing       | Uberconference
Newsletter                         | Ricardo Bueno
Fremium video subscription         | Twitch.tv, YouTube

Peer to Peer (P2P)
------------------
P2P lending                        | Lending Club
P2P gambling                       | BetFair
P2P buying                         | Etsy
P2P insurance                      | 
P2P computing                      | CrasPlan storage, SETI@home
P2P service                        | Mechanical Turk, TaskRabbit
P2P mobile WiFi/tethering          | 

Transaction-Processing
----------------------
Merchant acquiring                 | PayPal (On-/Offline), Stripe (OnL), Square (OffL)
Intermediary                       | IP Commerce (POS 2.0), CardSpring
Acquiring processing               | Paymentech
Bank transfer                      | Dwolla
Bank depository offering           | Simple, Movenbank (spread on average deposits)
Bank card issuance                 | Simple (interchange fee per transaction)
Fullfilment                        | Amazon
Messaging                          | Peer-to-Peer SMS, IM, Group Messaging
Telephony (public networks)        | Skype out/in
Telephony (private cloud)          | Native Skype
Mobile payment gateway             | Braintree
Platform monetization (“tax”)      | Facebook Credits, iOS 30/70 cut

Licensing
---------
Per seat                           | Sencha
Per device/server                  | QlikView
Per application instance           | Adobe Photoshop
Per site                           | Private cloud on internal infrastructure
Patent                             | Qualcomm
Brand                              | Sesame Street
Indirect                           | Apple Volume Purchasing

Data
----
User data                          | BlueKai
Business data                      | Duedil
User intelligence                  | YouGov
Search Data                        | Chango
Real-time consumer intent data     | Yieldbot
Benchmarking services              | Comscore
Market research                    | GLG

Mobile
------
Paid-app downloads                 | WhatsApp
In-app purchases                   | Zynga Poker
In-app subscriptions               | New York Times app
Advertising                        | Flurry, AdMob
Digital-to-physical                | Red Stamp, Postagram

Gaming
------
Freemium (virtual currency)        | Zynga
Subscription                       | World of Warcraft
Premium                            | Xbox games
DLC (downloadable content)         | Call of Duty
Ads                                | addictinggames.com

Open Source (FOSS)
------------------
Consulting                         | Red Hat, Nginx, Revsys
Support                            | 
Hosting/Infrastructure             | WordPress
Free for some, but not for others  |
Ads                                | Mozilla
Bundled features (e.g. search)     | Mozilla, Opera
~~~