我研究了很多，并且知道og：标题应该在facebook分享帖子中可见。我检查我渲染的HTML和它的外观相当不错。这是：
<meta property="og:site_name" content="SinePulse" />
<meta property="og:type" content="article" />
<meta property="og:url" content="http://www.sinepulse.com/about-us" />
<meta property="og:title" content="About Us" />
<meta property="og:description" content="SinePulse GmbH is a Munich based fast growing company that provides high quality and cost effective solution to industries, corporate clients, governments and NGOs. We have a global platform with active operation in EU, North America and Asia. SinePulse GmbH have almost 300 experts around the world to provide best quality services to our clients. Having a global platform, SinePulse GmbH experts keep on working round the clock for your satisfaction. You just place your idea and we do the rest. We start with requirement engineering and specification preparation." />
查看源：http://www.sinepulse.com/about-us
但是当我在以下地方探索它时： https://developers.facebook.com/tools/debug/
<meta property="og:title" content="About Us" />
...
...
<meta property="og:title" content="SinePulse" /> <- this was old html.
我正在使用drupal 7.问题是og：标签已在我的实时网站中更新但我可以在facebook调试工具上看到回溯缓存的html。这是一个问题吗？宣传需要时间吗？