Meet one of the networkers at last weekend's Startup School at Stanford: Marie Brattberg from Sweden. Uppsala-bred Brattberg is a founder of a mobile messaging startup, backed by Y-Combinator, called Heysan. This is the upside of an internet frenzy: it attracts a more photogenic class of entrepreneur. Heysan is looking for engineers, and venture capital investment. And here's Marie Brattberg.