I was tied up shooting the GigaOM Show this morning, but before the day escapes me I wanted to point out a few benchmarks in the video ad world. Three of anything makes a trend, and hey, if it’s an online video trend, I’d better be writing about it.

Tremor Media has raised an $11 million second round funding from Canaan Partners and Masthead Venture Partners, bringing its total investment to $19.4 million. Tremor sends video ads to more than 800 publisher sites with more than 92 million unique visitors per month, according to today’s press release.

VideoEgg added Metacafe, IMEEM, and Buzznet as video ad partners. These sites are similar to the company’s previous social networking partners — e.g. AOL, Bebo, hi5, Piczo, myYearbook, and Dogster — but the new relationships are different because they’re only for video ads rather than video uploading and serving. Which makes sense, because that’s VideoEgg’s main focus now. The company registers 50 million unique visitors each month across its ad network, according to Chief Marketing Officer Troy Young. He said VideoEgg is selling out most of its video inventory, and sees areas of new growth in produced video and casual games.

Dailymotion unveiled new ad formats, which include fancy names for overlays and player skins (”toaster ad”? how fun!).