private static void ClearCache(object sender, EventArgs e)
{
Guid blogId = Blog.CurrentInstance.BlogId;
blogsPosts.Remove(blogId);
Blog siteAggregationBlog = Blog.SiteAggregationBlog;
if (siteAggregationBlog != null)
{
blogsPosts.Remove(siteAggregationBlog.BlogId);
}
}