Today’s funding announcements include companies that work with lists, ads and Wi-Fi:

Ranker raises $1.4M for user-generated rankings: The list aggregation company has raised a first round of funding led by Tim Draper at Draper Associates/DFJ with participation from Rincon Venture Partners, Newport Coast Investments and others. Based in Los Angeles, the startup allows site visitors to vote on topics, which Ranker then combines into rankings. The company previously raised two rounds of seed funding and says it had 1.6M unique monthly visitors in March.

Rocket Fuel brings in $6.6M for ad optimization: The Redwood Shores, Calif.-based company has raised a third round of funding led by Northgate Capital with participation from Mohr Davidow Ventures, Labrador Capital Fund, Nokia Growth Partners and Wilson Sonsini Goodrich & Rosati, TechCrunch reports. The startup, which last raised $10M in September, helps marketers increase ROI by determining the best place for display ads.

Adap.tv lands $20M for video advertising service: The San Mateo, Calif.-based company has raised a new round of funding led by Bessemer Venture Partners with participation from Gemini Israel Funds, Redpoint Ventures and Spark Capital. The service, which launched in February 2010, connects advertisers with publishers looking to monetize their online video content.

Aerohive grabs $25M for controller-less Wi-Fi solutions: The wireless LAN company has raised a fourth round of funding led by New Enterprise Associates with participation from Kleiner Perkins Caufield & Byers, Lightspeed Venture Partners and Northern Light Venture Capital. Founded in 2006, the Sunnyvale, Calif.-based company has raised more than $70M in funding to date and provides enterprise and medium-sized companies with cloud-enabled Wi-Fi and routing solutions.