1. Thanks. 2. Irrelevant: what tech people (i.e., the actual decision makers on becoming your customer) will immediately think is "look they plagiarised HTML5'

1. Thanks. 2. Irrelevant: what tech people (i.e., the actual decision makers on becoming your customer) will immediately think is "look they plagiarised HTML5's logo", not "let me go through their site to see whether there's attribution" :)