public IEnumerable <Task> RunAsync(CancellationToken token)
{
// Screenshots
var sharedFilesPattern = @"https://steamcommunity.com/sharedfiles/filedetails/\?id=([0-9]*)";
string screenshotUrl(uint appId) => $"https://steamcommunity.com/app/{appId}/screenshots/?browsefilter=mostrecent";
yield return(scraper.GatherUnseenUrls(sharedFilesPattern, screenshotUrl(582890), x => slack.PostText(x), token));
yield return(scraper.GatherUnseenUrls(sharedFilesPattern, screenshotUrl(261820), x => slack.PostText(x), token));
// Discussions
var discussionsPattern = @"https://steamcommunity.com/app/([0-9]*)/discussions/([0-9]*)/([0-9]*)/";
string discussionsUrl(uint appId) => $"https://steamcommunity.com/app/{appId}/discussions/";
yield return(scraper.GatherUnseenUrls(discussionsPattern, discussionsUrl(582890), x => slack.PostText(x), token));
yield return(scraper.GatherUnseenUrls(discussionsPattern, discussionsUrl(261820), x => slack.PostText(x), token));
// Workshop
string workshopUrl(uint appId) => $"https://steamcommunity.com/workshop/browse/?appid={appId}&browsesort=mostrecent";
yield return(scraper.GatherUnseenUrls(sharedFilesPattern, workshopUrl(261820), x => slack.PostText(x), token));
// Guides
string guidesUrl(uint appId) => $"https://steamcommunity.com/app/{appId}/guides/";
yield return(scraper.GatherUnseenUrls(sharedFilesPattern, guidesUrl(582890), x => slack.PostText(x), token));
yield return(scraper.GatherUnseenUrls(sharedFilesPattern, guidesUrl(261820), x => slack.PostText(x), token));
// Videos
string videosUrl(uint appId) => $"https://steamcommunity.com/app/{appId}/videos/";
yield return(scraper.GatherUnseenUrls(sharedFilesPattern, videosUrl(582890), x => slack.PostText(x), token));
yield return(scraper.GatherUnseenUrls(sharedFilesPattern, videosUrl(261820), x => slack.PostText(x), token));
}