On the heels of its first exit (Hyperpublic, bought by Groupon last week), Boston-based NextView Ventures has closed its first ever VC fund, a $21 million pool dedicated to seed rounds of funding. The company already has 15 portfolio companies, most of which are based on the East coast. The fund, as Dan Primack notes, fills a gap in the Boston startup scene–too many angels and established funds, not enough seed money. Not anymore. [Source: NextView Ventures]