Bullish opinion about Urban Dictionary:

"Tons of content and diverse traffic sources (search engines, direct traffic, referring sites)"

Bearish opinion about Yelp:

"Monetization will disappoint investors who've coughed up $31 million"

Bullish opinion about Wikipedia:

"Will be a top-ten web property for years to come"

Bullish opinion about Craigslist:

"horrible design, but huge market share and brand power"

Bearish opinion about ebay:

"running out of room for growth"