NEW YORK (TheStreet) -- TheStreet's Stephanie Link spoke with Colin Gillis, technology analyst at BGC Partners, to talk about LinkedIn (LNKD) after his firm initiated coverage of the stock with a buy rating.Gillis says LinkedIn has a "wonderful" business, although he says the stock is not for everyone. "It's very expensive from a ratio basis," he said, "but it's a high growth name." LinkedIn has three main businesses: recruiting, advertising, and premium subscriptions. When Gillis noted that LinkedIn only monetizes roughly 1% of its registered users, Link chimed in, "that's the million dollar question. How do they get it beyond that?" Gillis also told Link that you should just "close your eyes," when asked about investing in LinkedIn for the long term. It is a very volatile name, where the stock rose or dropped more than 2% 49 times in 2012. "This is a high-growth, high-quality company," he added. -- Written by Bret Kenwell in New York.