Backplane, a US-based platform for web-based social communities, completed its series A round on Thursday, garnering $4.5m. New investors include Advance/Newhouse Investment Partnership, an affiliate of publishing company Conde Nast, which are both owned by Advance Publications.
New investors also included Sequoia Capital, Greylock Discovery Fund, Battery Ventures and Formation 8, while returning investors from Backplane’s $1.8m seed round were Google Ventures, Founders Fund Angel, Menlo Ventures, SV Angel, i/o Ventures and assorted angels.
The angel backers include co-founder…