Angel investors aren't always a good fit and may not be eager to dig deeper into their pockets.

FORBES: The next level

Third, their original venture capitalists and angel investors, who believe greed is good, are getting spooked by the dotcom slide.

CNN: Playing the IPO Game

"I like to think of Callas as an angel hanging over this production, bringing it good fortune, " he said.

BBC: NEWS | Entertainment | Swansong for opera's 40-year run

The Offense : You're in a splendid message volley with an angel, a gorgeous brunette with clever jokes and exceptionally good spelling and grammar skills.

CNN: Don't be offended by online-dating rejection

What angel investors look for is a great team with a good market that could potentially return 10 times their initial investment in a period of 5 years.

FORBES: Angel Investors: How The Rich Invest

Simon Pegg (who co-wrote the script) stars as Nicholas Angel, an ambitious policeman consigned, for his own good, to a blameless country town, where he pairs up with an overweight local officer, Danny Butterman (Nick Frost), to chase shoplifters and swans.

NEWYORKER: Hot Fuzz

Mr. Saverin's activities are good for the city-state, says Ash Singh, an investor and the CEO behind "Angel's Gate, " an Asia-based reality-TV series focusing on investment and entrepreneurship.

WSJ: The Other Facebook Founder

According to most studies, getting into angel investing without being prepared to make a total of between 20 and 80 investments is a good way to lose ALL your invested capital.

FORBES: David S. Rose -- Father of Angel Investing in New York