#15 Seniors.com

Sold for: $1,800,000

Year sold: 2007

Seniors.com helps mature singles create and build meaningful relationships online.

It was a big 2007 for a man named Page Howe. He sold two domains that year for 7-figures each. He sold Guy.com for $1 million, and Seniors.com for $1.8 million.

#14 Computer.com

Sold for: $2,100,000

Year sold: 2007

Computer.com connects the users to the services related to computers like PCs, computer bags, computer Careers, computer Degrees and many other computer stuff.

In October 2007, Computer.com cleaned up at the T.R.A.F.F.I.C. / Moniker domain name auction. WallStreet.com was almost sold for $3 million there, but it didn't "meet the set reserve prices," according to DomainRich.

#13 Investing.com

Sold for $2,450,000

Year sold: 2012

Investing.com, as the site says is a definitive source for tools and information relating to the financial markets such as real-time quotes and streaming charts, up-to-date financial news, technical analysis, brokers directory & listings, an economic calendar, and tools & calculators.

Forexpros.com bought Investing.com earlier this month for $2.45 million. It was the largest domain sale of the year.

Read also: 5 Tech CEOs To Watch Out For In 2013