Thank you very much, operator, and thank you, and welcome to CoStar Group's first quarter 2018 conference call. Before I turn the call over to Andy Florance, CoStar CEO and founder; and Scott Wheeler, our CFO, I have some very interesting and important items for you to consider. Certain portions of our discussion today may contain forward-looking statements, which involve many risks and uncertainties that could cause actual results to differ materially from such statements. Important factors that could cause actual results to differ include, but are not limited to, those stated in our hot-off-the-press April 23, 2018, press release on our earnings and in our filings with the SEC, including our most recent annual report on Form 10-K and our subsequent quarterly reports on Form 10-Q under the heading Risk Factors. All forward-looking statements are based on information available to CoStar as of the date of this call, and we assume no obligation to update these statements whether as a result of new information, future events or otherwise. Reconciliations to the most directly comparable GAAP measure to all of our non-GAAP financial measures discussed on this call, including, but not limited to, non-GAAP net income, EBITDA, adjusted EBITDA, forward-looking non-GAAP guidance are shown in detail on our press release issued today, along with definitions for those terms. The press release is available on our site at costargroup.com. As a reminder, today's call is being webcast live and in color on our website, where you can also find CoStar's Investor Relations page. Please refer to our release on how to access that. And remember, as usual, one question, so make it a good one. I'll now turn the call over to Andy Florance. Andy?